Jeff Simpson has a competitive grass court record of 24–29 across 53 matches (45.3%). The record shows a player capable of competing here, though there is clear room to push the win rate higher.

At Grand Slam level (Wimbledon): Jeff Simpson has struggled at Grand Slam level on grass: 4–8 (33.3%) in 12 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

2 semifinals on grass 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. 4 quarterfinals adds further depth to that picture.

By format on grass — best-of-five: 10–12 (45.5%); best-of-three: 14–17 (45.2%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 1973 — 11–7 (61.1%) from 18 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.