Jack Sock holds a solid clay court record of 33–26 across 59 matches (55.9%). A winning majority across 59 matches shows consistent ability to get results on clay. Claimed 1 title on clay: Houston.

At Grand Slam level (Roland Garros): Jack Sock is 9–7 (56.3%) across 16 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 clay (Monte Carlo, Madrid, Rome): Jack Sock is 7–8 (46.7%) across 15 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole clay swing.

2 finals reached on clay — won 1, lost 1 (solid 50% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on clay. 3 semifinals. 5 quarterfinals.

vs. Top 10 on clay: 0–3 (0.0%, 3 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: 11–7 (61.1%); best-of-three: 22–19 (53.7%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Best season: 2015 — 11–4 (73.3%) from 15 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.