John Yuill has found hard courts difficult, recording 30–44 across 74 matches (40.5%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. John Yuill has reached 1 final without yet claiming a title on hard — one of the finest margins in tennis.

At Grand Slam level (Australian Open & US Open): John Yuill has yet to record a win on hard at this stage — 0–2 across 2 Grand Slam matches. Breaking through here would mark a significant step forward on this surface.

One final reached on hard, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 2 semifinals. 4 quarterfinals.

vs. Top 10 on hard: 1–3 (25.0%, 4 matches). Top 10 opponents have represented a clear ceiling on hard; addressing that deficit is the single biggest lever for improving the overall record here.

By format on hard — best-of-five: 5–9 (35.7%); best-of-three: 25–35 (41.7%). Slightly stronger in three-set contests on hard, though the five-set record is still respectable.

Best season: 1973 — 5–2 (71.4%) from 7 matches. The best single-season display to date — a useful reference point as the hard record continues to develop.