James Blake defeated Ivo Karlovic 3-6 7-6 6-3 in the Shanghai Masters round of 64 on hard. The upset overturned the form book — Ivo Karlovic came in leading the head-to-head 7–2. James Blake narrowed the head-to-head to 7–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-26 | US Open | R128 | hard | Ivo Karlovic | 6-7 3-6 6-4 7-6 7-6 |
| 2010-02-22 | Delray Beach | QF | hard | Ivo Karlovic | 6-3 6-7 6-1 |
| 2009-07-10 | Davis Cup WG QF: CRO vs USA | RR | clay | Ivo Karlovic | 6-7 4-6 6-3 7-6 7-5 |
| 2009-05-10 | Madrid Masters | R32 | clay | James Blake | 6-7 6-4 7-6 |
| 2007-10-22 | Basel | R16 | hard | Ivo Karlovic | 4-6 7-6 6-4 |
| 2007-05-28 | Roland Garros | R128 | clay | Ivo Karlovic | 4-6 6-4 7-5 7-5 |
| 2007-02-12 | San Jose | R16 | hard | Ivo Karlovic | 6-7 7-6 6-4 |
| 2006-02-27 | Las Vegas | SF | hard | James Blake | 7-6 6-1 |
| 2000-06-26 | Wimbledon | Q128 | grass | Ivo Karlovic | 6-3 7-6(5) |
Averages over each player's completed matches in the selected window (149 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About