
Kei Nishikori defeated Marin Cilic 5-7 7-6 3-6 7-6 6-1 in the US Open round of 64 on hard. The upset overturned the form book — Marin Cilic came in ranked #88, defending last year's quarter-final. Kei Nishikori extended the head-to-head to 10–6.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-09-25 | Tokyo | R32 | hard | Kei Nishikori | 6-4 3-6 6-3 |
| 2018-08-27 | US Open | QF | hard | Kei Nishikori | 2-6 6-4 7-6(5) 4-6 6-4 |
| 2018-04-16 | Monte Carlo Masters | QF | clay | Kei Nishikori | 6-4 6-7(1) 6-3 |
| 2016-11-14 | Tour Finals | RR | hard | Marin Cilic | 3-6 6-2 6-3 |
| 2016-10-24 | Basel | F | hard | Marin Cilic | 6-1 7-6(5) |
| 2016-06-27 | Wimbledon | R16 | grass | Marin Cilic | 6-1 5-1 RET |
| 2015-10-05 | Tokyo | QF | hard | Kei Nishikori | 3-6 7-5 6-3 |
| 2015-08-03 | Washington | SF | hard | Kei Nishikori | 3-6 6-1 6-4 |
| 2014-08-25 | US Open | F | hard | Marin Cilic | 6-3 6-3 6-3 |
| 2014-04-21 | Barcelona | QF | clay | Kei Nishikori | 6-1 6-3 |
| 2013-12-29 | Brisbane | QF | hard | Kei Nishikori | 6-4 5-7 6-2 |
| 2013-02-18 | Memphis | QF | hard | Kei Nishikori | 6-4 6-2 |
| 2012-08-27 | US Open | R32 | hard | Marin Cilic | 6-3 6-4 6-7(3) 6-3 |
| 2011-01-03 | Chennai | R32 | hard | Kei Nishikori | 4-6 7-6(0) 6-2 |
| 2008-03-13 | Indian Wells Masters | R128 | hard | Marin Cilic | 6-2 6-4 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
Averages over each player's completed matches in the selected window (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Cilic M.: 14 days rest · 1 match (14d). Higher means fresher. About