Yuto Oki vs Hiromasa Koyama Head-to-Head Stats, Results & Performance Comparison

• In recent form, Oki has marginally outperformed Koyama on their second serve, with Oki winning 43.81% of points compared to Koyama's 43.43%. Could this give Oki a slight edge in service games?
• Oki has a notable advantage in return games, winning 49.81% of their opponent's second serve points versus Koyama's 46.09%. On first serve returns, Koyama is slightly better, achieving a win rate of 30.94% against Oki's 30.65%.
• When facing breakpoint situations, Koyama has an advantage, saving 49.57% compared to Oki's 48.47%. This could be a crucial factor under pressure.
• Looking at performance over the last year, Oki has significantly higher success, winning 51.06% of matches, while Koyama has won just 28.57%.
• On their best-performing surfaces, Oki excels on clay with a 67% win rate, whereas Koyama has a 31% win rate on hard courts. Both struggle on indoor hard courts.
• Oki has played against tougher opponents, with an average rank of 303.38, compared to Koyama's 511.14.
• In matches that progress to a deciding set, Oki again holds an advantage, winning 47% compared to Koyama's 25%.
• Although Koyama has a stronger breakpoint conversion rate at 46.3%, Oki’s overall more balanced stats may play a bigger role in determining the match outcome.

Editorial Prediction (September 15, 2025, UTC):

Oki and Koyama head into their upcoming match with closely contested individual stats. Oki shows a slight advantage in second-serve success and a significant edge in return game proficiency, which can be decisive over the match's entirety.

While Koyama appears more competent when converting breakpoints, Oki's higher overall performance percentage and experience against tougher competition present a robust case for them in protracted situations.

Given the available data, Oki’s superior match history, enhanced performance on various surfaces, and better handling of high-pressure scenarios suggest that Oki holds the upper hand. Thus, Oki is favored to win the upcoming match against Koyama.