Ivo Karlovic defeated Mardy Fish 7-6 6-3 5-7 7-6 in the US Open round of 128 on hard. The result followed the form book — Ivo Karlovic came in leading the head-to-head 4–1, defending last year's round of 128. Ivo Karlovic extended the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-02-22 | Delray Beach | SF | hard | Ivo Karlovic | 6-2 6-3 |
| 2007-08-19 | New Haven | SF | hard | Mardy Fish | 7-6(3) 6-4 |
| 2007-06-11 | Queen's Club | R64 | grass | Ivo Karlovic | 6-3 6-4 |
| 2007-02-12 | San Jose | QF | hard | Ivo Karlovic | 7-6(2) 6-4 |
| 2004-01-19 | Australian Open | R128 | hard | Ivo Karlovic | 7-6(0) 7-6(5) 7-6(4) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
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