Kei Nishikori defeated Roberto Bautista Agut 6-2 3-6 6-1 in the Barcelona quarter-final on clay. The upset overturned the form book — Roberto Bautista Agut came in ranked #180, defending last year's round of 32, but Kei Nishikori had been the form player, winning 2 of their last 4 on clay. Kei Nishikori extended the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-07-03 | Wimbledon | R32 | grass | Roberto Bautista Agut | 6-4 7-6(3) 3-6 6-3 |
| 2016-03-21 | Miami Masters | R16 | hard | Kei Nishikori | 6-2 6-4 |
| 2015-05-03 | Madrid Masters | R16 | clay | Kei Nishikori | 6-3 6-3 |
| 2014-04-21 | Barcelona | R32 | clay | Kei Nishikori | 6-1 4-6 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About