Ilie Nastase has an impressive grass court record of 84–32 across 116 matches (72.4% — strong). A win rate of that calibre over 116 matches is a reliable indicator of genuine quality on this surface. Claimed 3 titles on grass: South Orange, US Open, London / Queen's Club.

At Grand Slam level (Wimbledon): Ilie Nastase has been outstanding — 50–18 (73.5%) across 68 matches. Winning more than 7 in 10 Grand Slam matches on grass is the benchmark of an all-time great on this surface.

6 finals reached on grass — won 3, lost 3 (solid 50% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers on grass. 8 semifinals. 9 quarterfinals.

vs. Top 10 on grass: 3–4 (42.9%, 7 matches). Competitive against the elite, but still narrowly below .500 — closing that gap would directly elevate the overall grass court profile.

By format on grass — best-of-five: 57–22 (72.2%); best-of-three: 27–10 (73.0%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 1976 — 11–1 (91.7%) from 12 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.

Ilie Nastase assembled a remarkable 18-match winning streak on grass — a run of that length goes far beyond form and into a different level of dominance on this surface.