Head to head
1
Hard
0
3
Clay
0
1
Grass
0
1
Carpet
0
Jan Kodes's wins on the left · John Alexander's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 1976 | Philadelphia WCT | Carpet | R16 | Jan Kodes | 7-6(2) 6-3 |
| 1975 | Davis Cup EUR SF: TCH vs AUS | Clay | RR | Jan Kodes | 6-4 2-6 7-5 6-4 |
| 1973 | US Open | Grass | R16 | Jan Kodes | 7-6 7-5 6-4 |
| 1972 | Stockholm | Hard | R32 | Jan Kodes | 6-1 3-6 7-5 |
| 1971 | Hamburg | Clay | QF | Jan Kodes | 6-4 1-6 6-1 6-4 |
| 1969 | Charlotte | Clay | QF | Jan Kodes | 9-7 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.