Onny Parun has a competitive career record of 393–358 across 751 matches (52.3%). The record shows a player capable of competing at Tour level, though there is clear room to push the win rate higher. 6 titles: Auckland, Jakarta, Bombay, Johannesburg WCT — a record that reflects consistent ability to close out tournaments.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Onny Parun is 51–39 (56.7%) across 90 Grand Slam matches — below .500, though the elite draw depth makes that a notoriously difficult barrier.
13 finals reached — won 6, lost 7 (46% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 38 semifinals. 73 quarterfinals.
vs. Top 10: 4–44 (8.3%, 48 matches). Top 10 opponents have represented a clear ceiling; addressing that deficit is the single biggest lever for improving the overall record.
By format — best-of-five: 103–81 (56.0%); best-of-three: 290–277 (51.1%). Slightly better in five-set matches — a positive sign for Grand Slam campaigns specifically.
Historic season: 1974 — 76–37 (67.3%) from 113 matches. A campaign of 76 wins in a single season is among the finest single-season records the Open Era has seen — the clearest benchmark of what is achievable at peak level.
