Head to head
1
Hard
0
1
Clay
0
Mark Knowles's wins on the left · Maurice Ruah's on the right · bar lengths share one scale
All meetings (2)
| 1999 | Davis Cup G1 PO: VEN vs BAH | Hard | RR | Mark Knowles | 7-6(2) 1-6 0-6 7-5 6-3 |
| 1992 | Davis Cup G2 F: VEN vs BAH | Clay | RR | Mark Knowles | 6-3 4-6 6-4 |
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.