Marc-Kevin Goellner has found hard courts difficult, recording 37–62 across 99 matches (37.4%). 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 (Australian Open & US Open): Marc-Kevin Goellner is 8–11 (42.1%) across 19 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

ATP Masters 1000 on hard (Indian Wells, Miami, Canada, Cincinnati, Shanghai, Paris): Marc-Kevin Goellner has struggled at Masters level on hard: 1–8 (11.1%) in 9 matches. Improving at this level is the clearest path to a stronger overall record on this surface.

6 quarterfinals on hard, including one run to the semifinal — regularly reaching that stage is a solid baseline, with the next step being to break through to the final rounds more often.

vs. Top 10 on hard: 1–12 (7.7%, 13 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: 8–11 (42.1%); best-of-three: 29–51 (36.3%). Slightly better in five-set matches on hard — a positive sign for the Slams specifically.

Best season: 1994 — 10–11 (47.6%) from 21 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.