Yong-Kyu Lim has an impressive hard court record of 11–4 across 15 matches (73.3% — strong). A win rate of that calibre over 15 matches is a reliable indicator of genuine quality on this surface.

By format on hard — best-of-five: 8–4 (66.7%); best-of-three: 3–0 (100.0%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on hard.

Yong-Kyu Lim recorded a notable 6-match winning streak on hard — a run that demonstrates consistency across consecutive draws on this surface.