Tennys Sandgren has found clay courts difficult, recording 9–21 across 30 matches (30.0%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Tennys Sandgren has reached 1 final without yet claiming a title on clay — one of the finest margins in tennis.

At Grand Slam level (Roland Garros): Tennys Sandgren 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.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Tennys Sandgren has struggled at Masters level on clay: 0–3 (0.0%) in 3 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. 2 quarterfinals.

By format on clay — best-of-five: 1–5 (16.7%); best-of-three: 8–16 (33.3%). 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: 2018 — 7–9 (43.8%) from 16 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.