John Cooper holds a solid grass court record of 64–36 across 100 matches (64.0%). A winning majority across 100 matches shows consistent ability to get results on grass. John Cooper has reached 1 final without yet claiming a title on grass — one of the finest margins in tennis.

At Grand Slam level (Wimbledon): John Cooper is 15–12 (55.6%) across 27 Grand Slam matches — below .500, though the elite draw depth at the Slams makes that a notoriously difficult barrier to crack.

One final reached on grass, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 2 semifinals. 13 quarterfinals.

By format on grass — best-of-five: 30–21 (58.8%); best-of-three: 34–15 (69.4%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on grass.

Peak season: 1971 — 21–9 (70.0%) from 30 matches. That year captures the ceiling of what John Cooper can do on grass when performing at their best and represents the standard to aim for.