Jaime Yzaga holds a solid hard court record of 141–110 across 251 matches (56.2%). A winning majority across 251 matches shows consistent ability to get results on hard. 5 titles on hard: Auckland, Sydney Indoor, Schenectady, Sao Paulo, Itaparica — a record that reflects consistent ability to close out tournaments on this surface.

At Grand Slam level (Australian Open & US Open): a positive 24–17 (58.5%) across 41 matches — a player who generally rises to the occasion at the Slams on hard.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): a positive 19–19 (50.0%) across 38 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on hard.

5 finals reached on hard — converted 5 into titles (outstanding 100% conversion rate). Converting finals at that rate separates champions from contenders. 12 semifinals. 20 quarterfinals.

vs. Top 10 on hard: 6–16 (27.3%, 22 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 37–23 (61.7%); best-of-three: 104–87 (54.5%). Slightly better in five-set matches on hard — a positive sign for the Slams specifically.

Peak season: 1989 — 16–8 (66.7%) from 24 matches. That year captures the ceiling of what Jaime Yzaga can do on hard when performing at their best and represents the standard to aim for.