Jaime Oncins has a competitive clay court record of 38–42 across 80 matches (47.5%). The record shows a player capable of competing here, though there is clear room to push the win rate higher. Claimed 1 title on clay: Bologna.

At Grand Slam level (Roland Garros): a positive 5–3 (62.5%) across 8 matches — a player who generally rises to the occasion at the Slams on clay.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Jaime Oncins is 2–3 (40.0%) across 5 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole clay swing.

One final reached on clay, converted into a title — a perfect finals record on this surface. 1 semifinal. 5 quarterfinals.

vs. Top 10 on clay: 1–4 (20.0%, 5 matches). Top 10 opponents have represented a clear ceiling on clay; addressing that deficit is the single biggest lever for improving the overall record here.

By format on clay — best-of-five: 13–7 (65.0%); best-of-three: 25–35 (41.7%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Peak season: 1992 — 19–8 (70.4%) from 27 matches. That year captures the ceiling of what Jaime Oncins can do on clay when performing at their best and represents the standard to aim for.