Jaime Fillol Sr. has a competitive hard court record of 111–96 across 207 matches (53.6%). The record shows a player capable of competing here, though there is clear room to push the win rate higher. Jaime Fillol Sr. has reached 2 finals without yet claiming a title on hard — one of the finest margins in tennis.

At Grand Slam level (Australian Open & US Open): Jaime Fillol Sr. is 6–6 (50.0%) across 12 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

2 finals reached on hard — none converted into a title yet. Reaching 2 finals is a mark of real quality, but the gap between finalist and champion is one of the finest lines in the sport. 12 semifinals. 24 quarterfinals.

vs. Top 10 on hard: 3–15 (16.7%, 18 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: 12–11 (52.2%); best-of-three: 99–85 (53.8%). Consistent regardless of format on hard — a sign of a well-rounded game that holds up as matches develop.

Best season: 1974 — 13–7 (65.0%) from 20 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.