Thomas Johansson has found clay courts difficult, recording 37–69 across 106 matches (34.9%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Thomas Johansson has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Thomas Johansson has struggled at Grand Slam level on clay: 4–11 (26.7%) in 15 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Thomas Johansson has struggled at Masters level on clay: 10–22 (31.3%) in 32 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

One final reached on clay, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 1 semifinal. 3 quarterfinals.

vs. Top 10 on clay: 0–14 (0.0%, 14 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: 5–15 (25.0%); best-of-three: 32–54 (37.2%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on clay.

Best season: 2005 — 8–6 (57.1%) from 14 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.