Jaime Fillol Sr. has a competitive grass court record of 55–49 across 104 matches (52.9%). 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 1 final without yet claiming a title on grass — one of the finest margins in tennis.

At Grand Slam level (Wimbledon): Jaime Fillol Sr. is 21–19 (52.5%) across 40 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

One final reached on grass, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 2 semifinals. 5 quarterfinals.

vs. Top 10 on grass: 1–6 (14.3%, 7 matches). Top 10 opponents have represented a clear ceiling on grass; addressing that deficit is the single biggest lever for improving the overall record here.

By format on grass — best-of-five: 23–22 (51.1%); best-of-three: 32–27 (54.2%). Slightly stronger in three-set contests on grass, though the five-set record is still respectable.

Best season: 1977 — 5–2 (71.4%) from 7 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.