Thiemo de Bakker has found hard courts difficult, recording 34–52 across 86 matches (39.5%). 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 (Australian Open & US Open): Thiemo de Bakker has struggled at Grand Slam level on hard: 2–6 (25.0%) in 8 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): Thiemo de Bakker is 9–11 (45.0%) across 20 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole hard swing.

vs. Top 10 on hard: 1–13 (7.1%, 14 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 7–13 (35.0%); best-of-three: 27–39 (40.9%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Peak season: 2010 — 18–17 (51.4%) from 35 matches. That year captures the ceiling of what Thiemo de Bakker can do on hard when performing at their best and represents the standard to aim for.