Glenn Michibata has found hard courts difficult, recording 45–69 across 114 matches (39.5%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar.

At Grand Slam level (Australian Open & US Open): Glenn Michibata has struggled at Grand Slam level on hard: 3–7 (30.0%) in 10 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

3 semifinals on hard 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 hard: 0–9 (0.0%, 9 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: 6–13 (31.6%); best-of-three: 39–56 (41.1%). Markedly stronger in three-set formats; the win rate drops noticeably in five-setters, which has direct implications for Grand Slam performance on hard.

Best season: 1985 — 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.