Head to head
Rivalry summary
Carlos Costa and Alex O'Brien met 2 times on the ATP tour between 1994 and 1996. Carlos Costa leads the head-to-head 2–0 against Alex O'Brien.
1
Hard
0
1
Grass
0
Carlos Costa's wins on the left · Alex O'Brien's on the right · bar lengths share one scale
All meetings (2)
| 1996 | Indian Wells Masters | Hard | R64 | Carlos Costa | 7-6(5) 1-6 7-5 |
| 1994 | Wimbledon | Grass | R128 | Carlos Costa | 2-6 3-6 7-6(5) 6-4 6-1 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.