

Nuno Borges defeated Marin Cilic 7-5 6-3 in the Hong Kong round of 16 on hard. The upset overturned the form book — Marin Cilic came in leading the head-to-head 2–0. Nuno Borges claimed a first win over Marin Cilic in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-06-12 | s Hertogenbosch | R16 | grass | Marin Cilic | 6-3 3-6 |
| 2021-04-26 | Estoril | R16 | clay | Marin Cilic | 6-7 6-4 6-4 |
Averages over each player's completed matches in the selected window (22 vs 17). ATP, WTA & Challenger.
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