Juan Martin del Potro has an impressive grass court record of 40–17 across 57 matches (70.2% — strong). A win rate of that calibre over 57 matches is a reliable indicator of genuine quality on this surface.

At Grand Slam level (Wimbledon): a positive 21–9 (70.0%) across 30 matches — a player who generally rises to the occasion at the Slams on grass.

4 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. 7 quarterfinals adds further depth to that picture.

vs. Top 10 on grass: 3–9 (25.0%, 12 matches). Top 10 opponents have represented a clear ceiling on grass; addressing that deficit is the single biggest lever for improving the overall record here.

By format on grass — best-of-five: 21–9 (70.0%); best-of-three: 19–8 (70.4%). Consistent regardless of format on grass — a sign of a well-rounded game that holds up as matches develop.

Best season: 2012 — 8–2 (80.0%) from 10 matches. The best single-season display to date — a useful reference point as the grass record continues to develop.