Jan Michael Gambill defeated Andy Roddick 7-5 6-3 in the Los Angeles semi-final on hard. The upset overturned the form book — Andy Roddick came in leading the head-to-head 2–1, defending last year's round of 32. Jan Michael Gambill narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-03-08 | Indian Wells Masters | R64 | hard | Andy Roddick | 7-6(3) 6-2 |
| 2004-03-01 | Scottsdale | QF | hard | Andy Roddick | 6-7(4) 6-4 6-3 |
| 2001-02-26 | San Jose | R16 | hard | Jan Michael Gambill | 7-6(5) 7-6(1) |
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 (157 vs 200). ATP, WTA & Challenger.