Sam Querrey defeated Ivo Karlovic 7-6 7-6 6-2 in the US Open round of 32 on hard. The result followed the form book — Sam Querrey came in leading the head-to-head 5–1, defending last year's round of 128. Sam Querrey extended the head-to-head to 6–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-02-12 | New York | QF | hard | Sam Querrey | 7-6(5) 7-6(4) |
| 2013-09-16 | Metz | R32 | hard | Sam Querrey | 4-6 7-6(4) 6-4 |
| 2013-03-07 | Indian Wells Masters | R64 | hard | Sam Querrey | 6-3 6-4 |
| 2008-06-16 | Nottingham | R16 | grass | Ivo Karlovic | 7-6(3) 7-6(14) |
| 2007-07-23 | Indianapolis | R16 | hard | Sam Querrey | 5-7 7-5 7-6(6) |
| 2007-02-19 | Memphis | R32 | hard | Sam Querrey | 6-3 6-2 |
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