Gene Mayer holds a solid clay court record of 85–52 across 137 matches (62.0%). A winning majority across 137 matches shows consistent ability to get results on clay. Claimed 2 titles on clay: Guadalajara, Munich-2.

At Grand Slam level (Roland Garros): Gene Mayer is 8–7 (53.3%) across 15 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

8 finals reached on clay — won 2, lost 6 (25% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 12 semifinals. 15 quarterfinals.

vs. Top 10 on clay: 5–12 (29.4%, 17 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: 7–9 (43.8%); best-of-three: 78–43 (64.5%). 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: 1982 — 14–3 (82.4%) from 17 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.