Head to head
Rivalry summary
Colin O'Brien and Jarkko Nieminen met 1 times on the ATP tour between 2013 and 2013. Jarkko Nieminen leads the head-to-head 1–0 against Colin O'Brien.
0
Hard
1
Colin O'Brien's wins on the left · Jarkko Nieminen's on the right · bar lengths share one scale
All meetings (1)
| 2013 | Davis Cup G2 R2: IRL vs FIN | Hard | RR | Jarkko Nieminen | 6-1 6-2 6-0 |
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.