Stefan Simonsson has a competitive clay court record of 61–72 across 133 matches (45.9%). The record shows a player capable of competing here, though there is clear room to push the win rate higher. Stefan Simonsson has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Stefan Simonsson has yet to record a win on clay at this stage — 0–4 across 4 Grand Slam matches. Breaking through here would mark a significant step forward 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. 4 semifinals. 10 quarterfinals.

vs. Top 10 on clay: 0–8 (0.0%, 8 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: 1–6 (14.3%); best-of-three: 60–66 (47.6%). 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: 1983 — 14–8 (63.6%) from 22 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.