Chris Johnstone has found grass courts difficult, recording 21–27 across 48 matches (43.8%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Chris Johnstone has reached 1 final without yet claiming a title on grass — one of the finest margins in tennis.

At Grand Slam level (Wimbledon): Chris Johnstone is 6–9 (40.0%) across 15 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. 1 semifinal. 3 quarterfinals.

By format on grass — best-of-five: 6–9 (40.0%); best-of-three: 15–18 (45.5%). Slightly stronger in three-set contests on grass, though the five-set record is still respectable.

Best season: 1982 — 10–7 (58.8%) from 17 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.