Gabriel Diallo vs Daniel Altmaier

ATP Wimbledon – 1st Round
Gabriel Diallo vs Daniel Altmaier

🧠 Form & Context

• Gabriel Diallo
  🚀 Breakout year: Climbed into the Top 50 in 2025 after starting outside the Top 150.
  🏆 Fresh title: Won his maiden ATP title at ’s-Hertogenbosch and followed it with a QF in Mallorca.
  🌱 Grass surge: 8–2 record on grass this season, with wins over Humbert, Khachanov, and Vukic.
  🎯 Slam track: 3–1 in Slam openers; has reached R2 at both majors this year.
  📈 Momentum: Notable 2025 victories over Dimitrov, Norrie, and F. Cerúndolo signal top-tier potential.


• Daniel Altmaier
  🎢 Streaky 2025: Highlights include beating Fritz and reaching R4 at Roland Garros.
  ⛔ Grass struggles: Just 1–2 this swing, lifetime 9–16 on grass; never past R2 at Wimbledon.
  🧱 Slam value: Known for grinding out Slam wins, including multiple five-set comebacks.
  📊 H2H: Leads Diallo 2–0, but those meetings came before the Canadian’s rise in 2025.

🔍 Match Breakdown

This is a matchup between a player on the rise and one clinging to big-match experience.

Diallo’s aggressive serve-plus-one style thrives on grass. He’s confident stepping in on returns, especially second serves, and keeps points short with flat hitting off the forehand. His serve hold rate (88%) this swing proves his grass comfort.

Altmaier brings patience, variety, and tactical IQ—but his game isn’t naturally suited to grass. His extended rally strategy and deep-court positioning work well on clay or slow hard but leave him vulnerable to powerful first strikes here.

Key stat: Diallo has held serve 88% of the time on grass this month; Altmaier has won just 36% of second-serve return points in the same stretch.

🔮 Prediction

Prediction: Diallo in 4 sets – Diallo’s raw power and surface advantage should control the match, but Altmaier’s grit and Slam record may steal a set before the Canadian seals his Wimbledon debut win.