Michel Leclercq holds a solid clay court record of 18–11 across 29 matches (62.1%). A winning majority across 29 matches shows consistent ability to get results on clay.

At Grand Slam level (Roland Garros): Michel Leclercq is 5–6 (45.5%) across 11 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

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. 3 quarterfinals adds further depth to that picture.

By format on clay — best-of-five: 6–7 (46.2%); best-of-three: 12–4 (75.0%). 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: 1969 — 7–3 (70.0%) from 10 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.

Michel Leclercq recorded a notable 6-match winning streak on clay — a run that demonstrates consistency across consecutive draws on this surface.