Head to head
Rivalry summary
Demetris Leontis and Colin O'Brien met 1 times on the ATP tour between 2009 and 2009. Colin O'Brien leads the head-to-head 1–0 against Demetris Leontis.
0
Hard
1
Demetris Leontis's wins on the left · Colin O'Brien's on the right · bar lengths share one scale
All meetings (1)
| 2009 | Davis Cup G2 R2: CYP vs IRL | Hard | RR | Colin O'Brien | 7-6(2) 6-3 |
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.