Diego Hartfield has found the Tour difficult, recording 18–28 across 46 matches (39.1%). The numbers point to a player still building their Tour presence — a key area of opportunity going forward.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Diego Hartfield has struggled at Grand Slam level: 1–5 (16.7%) in 6 matches. The best-of-five format and elite fields make this the toughest benchmark on Tour.
By format — best-of-five: 2–5 (28.6%); best-of-three: 16–23 (41.0%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance.
Best season: 2007 — 14–19 (42.4%) from 33 matches. The best single-season display to date — a useful reference point as the career continues to develop.