Jan Choinski has found grass courts difficult, recording 4–7 across 11 matches (36.4%). 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): Jan Choinski is 2–3 (40.0%) across 5 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

By format on grass — best-of-five: 2–3 (40.0%); best-of-three: 2–4 (33.3%). Slightly better in five-set matches on grass — a positive sign for the Slams specifically.

Best season: 2026 — 3–2 (60.0%) from 5 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Recent Form 2026: 3–2 (60.0%) on grass. Last 5: W W L W L — positive form, wins outweighing losses in the latest stretch.