Yong-Il Yoon has a competitive career record of 20–20 across 40 matches (50.0%). 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): Yong-Il Yoon has yet to record a win at Grand Slam level — 0–2 across 2 matches. Breaking through here would mark a significant step forward.
By format — best-of-five: 11–11 (50.0%); best-of-three: 9–9 (50.0%). Consistent regardless of format — a sign of a well-rounded game that holds up as matches develop.
Best season: 1997 — 5–1 (83.3%) from 6 matches. The best single-season display to date — a useful reference point as the career continues to develop.
