Dave Siegler has found grass courts difficult, recording 2–6 across 8 matches (25.0%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar.

At Grand Slam level (Wimbledon): Dave Siegler has yet to record a win on grass at this stage — 0–3 across 3 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

By format on grass — best-of-five: 0–3 (0.0%); best-of-three: 2–3 (40.0%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on grass.