Jakob Hlasek has a competitive clay court record of 106–87 across 193 matches (54.9%). The record shows a player capable of competing here, though there is clear room to push the win rate higher. Jakob Hlasek has reached 4 finals without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Jakob Hlasek is 16–13 (55.2%) across 29 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Jakob Hlasek has struggled at Masters level on clay: 3–10 (23.1%) in 13 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

4 finals reached on clay — none converted into a title yet. Reaching 4 finals is a mark of real quality, but the gap between finalist and champion is one of the finest lines in the sport. 3 semifinals. 14 quarterfinals.

vs. Top 10 on clay: 3–17 (15.0%, 20 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: 34–22 (60.7%); best-of-three: 72–65 (52.6%). Significantly better in five-set matches — a strong physical profile on clay that tends to tell as matches and tournaments progress.

Best season: 1988 — 11–4 (73.3%) from 15 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.