Career 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002
All Rounds Final 1/2 1/4 First Second Third Fourth Pre-q Rubber 1 Rubber 2 Rubber 3 Rubber 4 Rubber 5 Robin Bronze Q3 N/A Q2 Q1 ER Q4 CR QF Q5 N/A
All Courts Acrylic N/A Clay Grass Carpet Hard I.hard
All Tour M15 Monastir M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya Venezuela #1-w2 Venezuela #1-w4 Colombia F2 Colombia F4 Turkey F3 Venezuela #1-w1 Colombia F5 Colombia F6 Colombia F1 Colombia F2 Venezuela #1-w3 Brazil F4 Brazil F5 Uzbekistan F2 Turkey F4 Turkey F5 Tunisia F5 Tunisia F6 Israel F4 Israel F5 Germany F4 Germany F5 Croatia F1 Croatia F2 Switzerland F2 Switzerland F3 Turkey F2 Turkey F3 Turkey F4 Turkey F5 Turkey F6 Uzbekistan F2 Turkey F9 Colombia F1 Colombia F4 El Salvador F1 Colombia F1 Colombia F2 Ecuador F1 Ecuador F2 Ecuador F3 Colombia F3 Colombia F4 USA F4 USA F6 Colombia F3 Mexico F6 Turkey F1 Colombia F3 Turkey F1 Brazil F6 Turkey F3 Turkey F4 Israel F1 Israel F2 Israel F3 Turkey F2 Turkey F3 Iran F1 Iran F2 Spain F35 Spain F36 Spain F37 Tunisia F4 Turkey F7 Germany F4 Kazakhstan F1 Turkey F4 Turkey F41 Turkey F42 Turkey F43 Turkey F44 Turkey F45 Turkey F46 Turkey F5 Turkey F6 Turkey F9 Turkey F12 Turkey F18 Turkey F21 Turkey F31 Turkey F34 Turkey F35 Turkey F8 Turkey F11 Turkey F48 Turkey F49 Turkey F2 (Antalya) Turkey F6 (Antalya) Turkey F7 (Antalya) Turkey F8 (Antalya) Israel F1 (Ramat Hasharon) Israel F2 (Ramat Hasharon) Turkey F12 (Antalya) Turkey F14 (Antalya) Turkey F15 (Antalya) Turkey F16 (Antalya) Turkey F18 (Antalya) Turkey F23 (Istanbul) Belarus F1 (Minsk) Belarus F2 (Minsk) Belarus F3 (Minsk) Turkey F32 (Antalya) Turkey F33 (Antalya) Turkey F36 (Antalya) Turkey F37 (Antalya) Turkey F38 (Antalya) Turkey F40 (Antalya) Kuwait F2 (Meshref) Qatar F4 (Doha) Qatar F5 (Doha) Qatar F6 (Doha) Qatar F1 (Doha) Qatar F2 (Doha) Qatar F3 (Doha) Bahrain F1 (Manama) Turkey F12 (Antalya) Turkey F13 (Antalya) Turkey F14 (Antalya) Turkey F15 (Antalya) Turkey F16 (Antalya) Turkey F18 (Antalya) Turkey F19 (Antalya) Turkey F20 (Antalya) Turkey F21 (Antalya) Belarus F1 (Minsk) M15 Doha M15 Doha M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Almaty M25 Nonthaburi M25 Nonthaburi M15 Kiryat Shmona M15 Kiryat Shmona M15 Antalya M15 Antalya M15 Antalya M15 Antalya M25 Nonthaburi M25 Nonthaburi M25 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Novi Sad M15 Novi Sad M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M25 Antalya M25 Antalya M25 Antalya M25 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M25 Tbilisi M15 Antalya M15 Antalya M15 Antalya M25 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M25 Antalya M25 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Antalya M15 Monastir M15 Antalya M15 Monastir Bancolombia Open - Cali President's Cup - Astana M15 Antalya M15 Antalya M15 Antalya Bukhara Challenger - Bukhara Bogota Challenger - Bogota Copa Petrobras Bogota - Bogota San Luis Potosi Challenger - San Luis Potosi Draft Corona Mexico City Open - Mexico City Challenger Casablanca San Angel - Mexico City Bogota Challenger - Bogota Samarkand Challenger - Samarkand VIII Gramado Open - Gramado Copa Petrobras - Bogota Corona Mexico City Open - Mexico City San Luis Potosi Challenger - San Luis Potosi Torneo Internacional Challenger Fila 2006 - Leon Abierto Colombiano de Tenis - Bogota Challenger ATP de Cuenca Diario El Mercurio - Cuenca Seguros Bogota Open - Bogota Akbank Private Banking TED Open 2006 - Istanbul dBI Tennis Challenger - Binghamton GHI Bronx Tennis Classic - Bronx Samarkand Challenger - Samarkand Bukhara Challenger - Bukhara XII Trofeo Ciudad de Quito 'Diario El Comercio' - Quito Seguros Bolivar Open - Medellin Copa Petrobras Colombia - Bogota Bancolombia Open - Bogota Voit Mexico City Open - Mexico City San Luis Potosi Challenger 2007 - San Luis Potosi Samarkand Challenger - Samarkand Morocco Tennis Tour - Casablanca Morocco Tennis Tour - Marrakech Fergana Challenger - Fergana The Surbiton Trophy - Surbiton Turkey F6 Seguros Bolivar Open - Bogota Samarkand Challenger - Samarkand Bukhara Challenger - Bukhara Karshi Challenger - Karshi Seguros Bolivar Open - Medellin XIII Trofeo Ciudad de Quito - Quito Copa Petrobras Colombia - Bogota Copa Petrobras Brazil - Belo Horizonte Copa Petrobras Uruguay - Montevideo Copa Petrobras Paraguay - Asuncion Copa Petrobras Argentina - Buenos Aires Sail Open - New Delhi Bancolombia Open - Bogota BH Indoor Sarajevo - Sarajevo 1° Torneo Challenger Series 12° Trofeo Paolo Corazzi - Cremona III Challenger Isla de Gran Canaria Ciudad de Telde - Telde Pharma Medico Open 2008 - Aarhus Fergana Challenger - Fergana Izmir Cup - Izmir Schickendanz Open - Furth Sporting Challenger '08-Trofeo Regione Piemonte - Turin M25 Antalya Israel Open in Memory of Col. Ilan Ramon - Ramat Hasharon Porsche Open - Poznan Kos Succhetti Tennis Cup - Cordenons Samarkand Challenger - Samarkand Alexander Kolyaskin Memorial - Donetsk XIV Challenger ATP Club Premium Open - Quito Seguros Bolivar Open - Cali Copa Petrobras-Colombia - Bogota Ethias Trophy - Mons Tashkent Challenger - Tashkent IV Challenger Ciudad De Guayaquil - Guayaquil Seguros Bolivar Open - Medellin Salinas Challenger Heilbronn Challenger Belgrade Challenger Bangkok Challenger Korat Challenger San Luis Potosi Challenger Mexico City Challenger III Isla de Lanzarote - Lanzarote Pereira Challenger Izmir Challenger Nottingham Challenger Istanbul Challenger Cali Challenger Bogota Challenger Quito Challenger Sacramento Challenger Tiburon Challenger Astana Challenger Medellin Challenger Guayaquil Challenger Bucaramanga Challenger BMW Tennis Championship - Sunrise Sarajevo Challenger Bogota Challenger Akbank Private Banking TED Open - Istanbul Pereira Challenger Tunis Challenger Ramat Hasharon Challenger Nottingham Challenger Braunschweig Challenger Bogota Challenger Rimini Challenger Istanbul Challenger Wroclaw Challenger Banja Luka Challenger Izmir Challenger Ramat Hasharon Challenger Heilbronn Challenger Le Gosier Challenger Monza Challenger Rome Challenger Braunschweig Challenger Scheveningen Challenger Sopot Challenger Istanbul Challenger Izmir Challenger Heilbronn Challenger Dallas Challenger Pereira Challenger Mersin Challenger Rome Challenger Tunis Challenger Prague Challenger Bordeaux Challenger Prostejov Challenger Nottingham-2 Challenger Braunschweig Challenger Bogota Challenger Astana Challenger San Marino Challenger Istanbul Challenger Cali Challenger Izmir Challenger Bucaramanga Challenger Pereira Challenger Barranquilla Challenger Mersin Challenger Ciudad de Pozoblanco Open Diputacion - Cordoba Seguros Bolivar Open - Bogota Tunis Challenger Turin Challenger Credicard Mastercard Tennis Cup 2005 - Campos do Jordao 14° BH Tennis Open - Belo Horizonte M15 Antalya Bogota Challenger Manchester Challenger II Manta Open - Manta Bukhara Challenger - Bukhara Recanati Challenger Bratislava Challenger Helsinki Challenger Prague Challenger Milan Challenger Todi Challenger Istanbul Challenger Eskisehir Challenger Astana Challenger Istanbul Challenger Izmir Challenger Kazan Challenger Bogota Challenger Bratislava Challenger Helsinki Challenger Bergamo Challenger Astana Challenger Kazan Challenger Mersin Challenger Tunis Challenger Heilbronn Challenger Rome Challenger Astana Challenger Segovia Challenger Istanbul Challenger Izmir Challenger Mons Challenger Rennes Challenger Eckental Challenger Mouilleron-Le-Captif Challenger Helsinki Challenger Andria Challenger Kazan Challenger Raanana Challenger Mersin Challenger Prostejov Challenger Polska Energia Open - Bytom Istanbul Challenger Izmir Challenger Orleans Challenger Mons Challenger Rennes Challenger Eckental Challenger Mouilleron-Le-Captif Challenger Brescia Challenger Canberra Challenger Irving Challenger Guangzhou Challenger Shenzhen Challenger Raanana Challenger Rome Challenger Heilbronn Challenger Prostejov Challenger Caltanissetta Challenger Moscow Challenger Perugia Challenger Todi Challenger Prague Challenger Liberec Challenger Portoroz Challenger Barranquilla Challenger Istanbul Challenger Izmir Challenger Medellin Challenger Stockton Challenger Fairfield Challenger Las Vegas Challenger Budapest Challenger Guayaquil Challenger Bratislava Challenger Bogota Challenger Astana Challenger Bangkok Challenger Bangkok Challenger Irving Challenger Heilbronn Challenger Mestre Challenger Lisbon Challenger Poprad Tatry Challenger Recanati Challenger Perugia Challenger Astana Challenger San Benedetto Challenger Prague Challenger Santo Domingo Challenger Istanbul Challenger Izmir Challenger Dallas Challenger Bangkok Challenger Bangkok Challenger Le Gosier Challenger Mexico City Challenger Guadalajara Challenger Puerto Vallarta Challenger Vancouver Challenger Monterrey Challenger Santo Domingo Challenger Lima Challenger Guayaquil Challenger Columbus Challenger Newport Beach Challenger Morelos Challenger Indian Wells Challenger Monterrey Challenger Sarasota Challenger Tallahassee Challenger Almaty Challenger Ludwigshafen Challenger Perugia Challenger Nur-Sultan Challenger San Benedetto Challenger Cassis Challenger Istanbul Challenger Bangkok Challenger Bangkok Challenger Morelos Challenger Istanbul Challenger Istanbul Challenger Antalya 2 Challenger Antalya 3 Challenger Antalya 4 Challenger Sao Paulo Challenger Sunrise Challenger Furth Challenger Calabasas Challenger Sunrise Challenger Istanbul Challenger Wimbledon - London Australian Open - Melbourne Istanbul Challenger French Open - Paris French Open - Paris Antalya Challenger The 10tele.com Open - Nottingham Chennai Open - Chennai Millenium Tennis Championships - Delray Beach Grand Prix Hassan II - Casablanca Estoril Open - Estoril The Stella Artois Championships - London RCA Championships - Indianapolis Legg Mason Tennis Classic - Washington Mercedes Cup - Stuttgart Austrian Open - Kitzbuhel BA-CA Tennis Trophy - Vienna If Stockholm Open - Stockholm Grand Prix de Tennis de Lyon - Lyon PBZ Zagreb Indoors - Zagreb ABN AMRO World Tennis Tournament - Rotterdam Open 13 - Marseille The Dubai Tennis Championships - Dubai AEGON Championships - London Countrywide Classic - Los Angeles Legg Mason Tennis Classic - Washington Thailand Open - Bangkok AIG Japan Open Tennis Championships - Tokyo If Stockholm Open - Stockholm St. Petersburg Open - St. Petersburg Chennai Open - Chennai PBZ Zagreb Indoors - Zagreb ABN AMRO World Tennis Tournament - Rotterdam SAP Open - San Jose The Dubai Tennis Championships - Dubai Delray Beach International Tennis Championships - Delray Beach Open Sabadell Atlantico - Barcelona Estoril Open - Estoril AEGON Championships - London Ordina Open - s-Hertogenbosch Campbells Hall of Fame Tennis Championships - Newport Countrywide Classic - Los Angeles Legg Mason Tennis Classic - Washington Malaysian Open - Kuala Lumpur AIG Japan Open Tennis Championships - Tokyo Bank Austria Tennis Trophy - Vienna Davidoff Swiss Indoors Basel - Basel Aircel Chennai Open - Chennai Brisbane International - Brisbane Medibank International - Sydney Heineken Open - Auckland Movistar Open - Santiago PBZ Zagreb Indoors - Zagreb Brasil Open - Costa do Sauipe ABN AMRO World Tennis Tournament - Rotterdam Abierto Mexicano Telcel - Acapulco Dubai Duty Free Tennis Championships - Dubai Bet-At-Home Austrian Open - Kitzbuhel Open Sabadell Atlantico - Barcelona Serbia Open - Belgrade AEGON Championships - London UNICEF Open - 's Hertogenbosch Mercedes Cup - Stuttgart German Tennis Championships - Hamburg Allianz Suisse Open - Gstaad Legg Mason Tennis Classic - Washington Winston Salem - Winston Salem PTT Thailand Open - Bangkok China Open - Beijing Rakuten Japan Open - Tokyo If Stockholm Open - Stockholm St. Petersburg Open - St. Petersburg Swiss Indoors Basel - Basel Qatar ExxonMobil Open - Doha Brisbane International - Brisbane Heineken Open - Auckland PBZ Zagreb Indoors - Zagreb VTR Open - Vina del Mar Brasil Open - Sao Paulo Abierto Mexicano Telcel - Acapulco Dubai Duty Free Tennis Championships - Dubai Open Sabadell Atlantico - Barcelona BMW Open - Munich UNICEF Open - 's Hertogenbosch SkiStar Swedish Open - Bastad Credit Agricole Suisse Open - Gstaad Bet-at-home Open - Hamburg Winston-Salem Open - Winston-Salem China Open - Beijing Erste Bank Open - Vienna Qatar ExxonMobil Open - Doha Brisbane International - Brisbane Heineken Open - Auckland PBZ Zagreb Indoors - Zagreb VTR Open - Vina del Mar Brasil Open - Sao Paulo Abierto Mexicano Telcel - Acapulco Dubai Duty Free Tennis Championships - Dubai Barcelona Open BancSabadell - Barcelona BRD Nastase Tiriac Trophy - Bucharest BMW Open - Munich Open de Nice Cote d'Azur - Nice AEGON Championships - London Claro Open Colombia - Bogota BB&T Atlanta Open - Atlanta Citi Open - Washington PTT Thailand Open - Bangkok China Open - Beijing If Stockholm Open - Stockholm Valencia Open - Valencia Brisbane International - Brisbane Qatar ExxonMobil Open - Doha Heineken Open - Auckland Open Sud de France - Montpellier Royal Guard Open Chile - Vina del Mar Copa Claro - Buenos Aires Rio Open 500 - Rio de Janeiro Brasil Open - Sao Paulo US Men's Clay Court Championship - Houston Barcelona Open BancSabadell - Barcelona AEGON Championships - London AEGON International - Eastbourne Mercedes Cup - Stuttgart Bet-at-home Open - Hamburg Citi Open - Washington Shenzhen Open - Shenzhen China Open - Beijing Valencia Open - Valencia Brisbane International - Brisbane Heineken Open - Auckland Open Sud de France - Montpellier Ecuador Open - Quito ABN AMRO World Tennis Tournament - Rotterdam Brasil Open - Sao Paulo Rio Open - Rio de Janeiro Open 13 - Marseille Abierto Mexicano Telcel - Acapulco Dubai Duty Free Tennis Championships - Dubai US Men's Clay Court Championship - Houston Barcelona Open BancSabadell - Barcelona TEB BNP Paribas Istanbul Open - Istanbul Geneva Open - Geneva Topshelf Open - 's-Hertogenbosch Gerry Weber Open - Halle AEGON Championships - London Aegon Nottingham Open - Nottingham SkiStar Swedish Open - Bastad Vegeta Croatia Open - Umag Credit Agricole Suisse Open - Gstaad Austrian Open - Kitzbuhel Winston-Salem Open - Winston-Salem Malaysian Open - Kuala Lumpur Kremlin Cup - Moscow Erste Bank Open - Vienna Valencia Open - Valencia Aircel Chennai Open - Chennai Qatar ExxonMobil Open - Doha Garanti Koza Sofia Open - Sofia Argentina Open - Buenos Aires Rio Open - Rio de Janeiro Open 13 - Marseille Brasil Open - Sao Paulo Barcelona Open BancSabadell - Barcelona TEB BNP Paribas Istanbul Open - Istanbul BMW Open - Munich Abierto Mexicano - Los Cabos Kremlin Cup - Moscow Apia International - Sydney Ecuador Open - Quito Delray Beach Open - Delray Beach Abierto Mexicano Telcel - Acapulco Barcelona Open BancSabadell - Barcelona Antalya Cup - Antalya Suisse Open - Gstaad Generali Open - Kitzbuhel TEB BNP Paribas Istanbul Open - Istanbul Antalya Cup - Antalya SkiStar Swedish Open - Bastad Swiss Open - Gstaad US Men's Clay Court Championship - Houston Antalya Open - Antalya Regions Morgan Keegan Championships - Memphis Dubai Duty Free Tennis Championships - Dubai Rogers Masters - Montreal Pacific Life Open - Indian Wells Sony Ericsson Open - Miami BNP Paribas Open - Indian Wells Sony Ericsson Open - Miami Rogers Cup - Montreal Western & Southern Financial Group Masters - Cincinnati Sony Ericsson Open - Miami Internazionali BNL dItalia - Rome Mutua Madrilena Masters Madrid - Madrid Rogers Cup - Toronto Western & Southern Financial Group Masters - Cincinnati Shanghai ATP Masters 1000 - Shanghai BNP Paribas Masters - Paris BNP Paribas Open - Indian Wells Sony Ericsson Open - Miami Monte-Carlo Rolex Masters - Monte-Carlo Mutua Madrilena Madrid Open - Madrid Internazionali BNL d'Italia - Rome Rogers Cup - Montreal Western & Southern Financial Group Masters - Cincinnati Shanghai ATP Masters - Shanghai BNP Paribas Masters - Paris BNP Paribas Open - Indian Wells Sony Ericsson Open - Miami Mutua Madrilena Madrid Open - Madrid Internazionali BNL d'Italia - Rome Western & Southern Open - Cincinnati BNP Paribas Open - Indian Wells Sony Open Tennis - Miami Mutua Madrid Open - Madrid Internazionali BNL d'Italia - Rome Shanghai Rolex Masters - Shanghai BNP Paribas Masters - Paris BNP Paribas Open - Indian Wells Sony Open Tennis - Miami Mutua Madrid Open - Madrid Internazionali BNL d'Italia - Rome Rogers Cup - Toronto Western & Southern Open - Cincinnati Shanghai Rolex Masters - Shanghai BNP Paribas Masters - Paris BNP Paribas Open - Indian Wells Miami Open - Miami Mutua Madrid Open - Madrid Internazionali BNL d'Italia - Rome Western & Southern Open - Cincinnati Miami Open - Miami Monte-Carlo Rolex Masters - Monte-Carlo Mutua Madrid Open - Madrid Internazionali BNL d'Italia - Rome BNP Paribas Open - Indian Wells Miami Open - Miami Mutua Madrid Open - Madrid Internazionali BNL d'Italia - Rome Miami Open - Miami BNP Paribas Open - Indian Wells U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York French Open - Paris Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris U.S. Open - New York Wimbledon - London U.S. Open - New York Australian Open - Melbourne Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York Australian Open - Melbourne French Open - Paris Wimbledon - London U.S. Open - New York French Open - Paris Wimbledon - London U.S. Open - New York French Open - Paris Wimbledon - London U.S. Open - New York Davis Cup, Group 2, 1R, COL-URU 4-1 Davis Cup, Group 2, 2R, COL-PAR 4-1 Davis Cup, Group 2, F, DOM-COL 0-5 Davis Cup, Group 1, 1R, CAN-COL 5-0 Davis Cup, Group 1, 1R, COL-URU 3-2 Davis Cup, Group 1, 2R, BRA-COL 4-1 Davis Cup, Group 1, 2R, COL-BRA 1-4 Davis Cup, Group I, 1R, URU-COL 4-1 Davis Cup, Group I, PO, MEX-COL 0-5 Davis Cup, Group I, 1R, ECU-COL 1-4 Davis Cup, Group II, 1R, TUR-BIH 1-3 Davis Cup, Group I, 2R, BRA-COL 3-1 Davis Cup, Group I, 2R, COL-URU 5-0 Davis Cup, Group I, 2R, COL-DOM 4-1 Davis Cup, World Group, PO, CAN-COL 3-2 Davis Cup, Group I, 2R, URU-COL 2-3 Davis Cup, Group II, 1R, TUR-RSA 3-2 Davis Cup, Group II, 2R, TUR-BLR 2-3 Davis Cup, World Group, PO, COL-JPN 2-3 Davis Cup, Group I, 2R, CHI-COL 3-1 Davis Cup, Group I, PO, DOM-COL 1-4 Davis Cup, Group II, 1R, CYP-TUR 1-4 Davis Cup, Group II, 2R, TUR-SWE 1-4 Davis Cup, Group I, 2R, COL-CHI 3-1 Davis Cup, World Group, PO, COL-CRO 1-4 Davis Cup, Group I, 2R, COL-BRA 3-2 Davis Cup, World Group, PO, ARG-COL 4-0 Davis Cup, World Group, QR, COL-SWE 4-0 Davis Cup, World Group, QR, COL-ARG 3-1 Davis Cup, Group II, PO, TUR-MDA 2-3 Davis Cup, World Group, PO, JPN-COL 3-2 French Open (juniors) U.S. Open (juniors) Olympics - London Davis Cup, Group II, 1R, TUR-BUL 3-2 Davis Cup, Group 1, 1R, COL-URU 5-0 Davis Cup, Finals, Group D Davis Cup, Group 1, 1R, COL-CAN 4-1 Davis Cup, Group 2, 1R, IRL-TUR 4-1 Davis Cup, Europe/Africa Group II, PO, GBR-TUR 5-0 Davis Cup, World Group, PO, COL-USA 1-3 Davis Cup, Group II, 2R, BIH-TUR 3-1