Mark Kaplan has found the Tour difficult, recording 11–21 across 32 matches (34.4%). The numbers point to a player still building their Tour presence — a key area of opportunity going forward. Mark Kaplan has reached 1 final without yet claiming a title — one of the finest margins in tennis.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Mark Kaplan has yet to record a win at Grand Slam level — 0–4 across 4 matches. Breaking through here would mark a significant step forward.
One final reached, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 1 semifinal. 2 quarterfinals.
By format — best-of-five: 0–4 (0.0%); best-of-three: 11–17 (39.3%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance.
Best season: 1990 — 5–9 (35.7%) from 14 matches. The best single-season display to date — a useful reference point as the career continues to develop.