Hans Schwaier has found clay courts difficult, recording 50–69 across 119 matches (42.0%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Hans Schwaier has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Hans Schwaier has struggled at Grand Slam level on clay: 1–5 (16.7%) in 6 matches. The best-of-five format and elite fields make this the toughest benchmark 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. 5 semifinals. 7 quarterfinals.

vs. Top 10 on clay: 1–4 (20.0%, 5 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: 3–6 (33.3%); best-of-three: 47–63 (42.7%). 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 — 6–3 (66.7%) from 9 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.