Jannik Sinner vs Daniel Altmaier Head-to-Head Stats, Results & Performance Comparison

• How does their recent second serve performance compare? Daniel Altmaier has a slight edge, winning 45.18% of points on his second serve compared to Jannik Sinner's 40.18%.
• In return games, who performs better? Altmaier again has an advantage, winning 45.04% of opponents’ second serve points versus Sinner’s 40.02%, and 24.03% of first serve returns compared to Sinner’s 21.88%.
• Under pressure, Altmaier saves 55.84% of breakpoints compared to Sinner’s 52.91%.
• Overall performance in the past year shows Sinner as dominant, winning 91.80% of his matches, whereas Altmaier has only won 50.72%.
• What surface do they excel on? Altmaier is at his best on clay (61% win rate), whereas Sinner shines on indoor hard courts (61% win rate).
• Level of play: Altmaier has primarily competed on the Main tour (44.12% win rate), while Sinner has excelled at Grand Slam events with a 92.86% win rate.
• Previous encounters: In head-to-head matches, both players have each won 1 match and 5 sets against each other.
• Historically, their matches extend to an average duration of 4 hours and 30 minutes.
• In decisive moments like tiebreaks, Altmaier leads 2-1.
• Against high-quality opponents, Sinner has faced players with a lower average rank (135) than Altmaier (95).
• Deciding set performance favors Sinner, who has won 67% of these sets, slightly higher than Altmaier’s 64%.

Editorial Prediction (October 4, 2025, UTC):

Recent form suggests that Daniel Altmaier has an edge in service and return stats, particularly on second serve points and in tiebreak situations. These aspects could provide him with crucial points during the match.

Jannik Sinner, however, displays a formidable winning percentage in Grand Slam events and decisive sets, indicating a strong capacity to perform under high-stakes conditions.

Although Altmaier shows consistent strengths in certain areas, Sinner's overall performance metrics and experience on the big stage suggest he is more likely to clinch victory in this matchup. Thus, Jannik Sinner is favored to win their upcoming contest.