Gaston Gaudio defeated Albert Costa 7-5 6-0 in the Hamburg round of 32 on clay. The upset overturned the form book — Albert Costa came in defending last year's round of 16. Gaston Gaudio moved ahead in the head-to-head, 2–1.
Gaudio G. took it in straight sets.
Gaudio G. and Costa A. faced 4 of the same opponents in the last 12 months. Gaudio G. went 3–1 (75%) against them, Costa A. 2–2 (50%). Results against comparable opponents are close (1 : 0 better-results split).
Only 4 common opponents — small sample, treat as indicative.
Gaston Gaudio beat Albert Costa 7-5 6-0. Umpiry, "Gaston Gaudio vs Albert Costa — Hamburg Round of 32", https://umpiry.com/match/2005-05-11/costa-vs-gaudio-hamburg-r32?utm_source=cite (as of 11 May 2005).