Head to head
Rivalry summary
Sammy Giammalva Jr. and Tim Donovan met 1 times on the ATP tour between 1989 and 1989. Tim Donovan leads the head-to-head 1–0 against Sammy Giammalva Jr..
0
Hard
1
Sammy Giammalva Jr.'s wins on the left · Tim Donovan's on the right · bar lengths share one scale
All meetings (1)
| 1989 | Livingston | Hard | R32 | Tim Donovan | 6-2 7-5 |
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.