Bjorn Phau has found clay courts difficult, recording 22–37 across 59 matches (37.3%). 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 (Roland Garros): Bjorn Phau has yet to record a win on clay at this stage — 0–5 across 5 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): a positive 2–2 (50.0%) across 4 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on clay.

2 semifinals on clay without yet reaching a final — consistent deep runs that show the ability to string together wins across a full draw, with the step to the final still to come. 4 quarterfinals adds further depth to that picture.

vs. Top 10 on clay: 0–5 (0.0%, 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: 0–5 (0.0%); best-of-three: 22–32 (40.7%). 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: 2010 — 5–5 (50.0%) from 10 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.