Sjeng Schalken defeated Albert Costa 6-4 5-7 6-3 in the Boston semi-final on hard. The upset overturned the form book — Albert Costa came in leading the head-to-head 3–2, but Sjeng Schalken had been the form player, winning 2 of their last 4 on hard. Sjeng Schalken narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-03-13 | Indian Wells Masters | R16 | hard | Sjeng Schalken | 6-2 6-3 |
| 1998-03-02 | Scottsdale | QF | hard | Sjeng Schalken | 6-3 6-4 |
| 1997-05-05 | Hamburg Masters | R32 | clay | Albert Costa | 6-3 7-6 |
| 1996-04-15 | Barcelona | R32 | clay | Albert Costa | 6-7(8) 7-6(7) 6-3 |
| 1995-10-23 | Santiago | QF | clay | Albert Costa | 6-7(1) 7-5 6-3 |
Averages over each player's completed matches in the selected window (200 vs 200). 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