Keith Diepraam has a competitive career record of 11–12 across 23 matches (47.8%). The record shows a player capable of competing at Tour level, though there is clear room to push the win rate higher.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): 1–2 across just 3 matches — still very early days at this level.
By format — best-of-five: 4–6 (40.0%); best-of-three: 7–6 (53.8%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance.
Best season: 1970 — 10–10 (50.0%) from 20 matches. The best single-season display to date — a useful reference point as the career continues to develop.