Head to head
2
Hard
1
1
Clay
0
Jaime Yzaga's wins on the left · Mark Knowles's on the right · bar lengths share one scale
All meetings (4)
| 1996 | Davis Cup G1 QF: BAH vs PER | Hard | RR | Mark Knowles | 2-6 7-5 7-6(2) 6-3 |
| 1995 | Davis Cup G1 PO: PER vs BAH | Clay | RR | Jaime Yzaga | 7-5 6-1 6-3 |
| 1992 | Davis Cup G2 SF: BAH vs PER | Hard | RR | Jaime Yzaga | 6-7(3) 6-3 7-6(2) 6-5 RET |
| 1991 | Washington | Hard | R32 | Jaime Yzaga | 7-5 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.