Head to head
Rivalry summary
William Coghlan and Koji Watanabe met 1 times on the ATP tour between 1969 and 1969. William Coghlan leads the head-to-head 1–0 against Koji Watanabe.
1
Grass
0
William Coghlan's wins on the left · Koji Watanabe's on the right · bar lengths share one scale
All meetings (1)
| 1969 | Melbourne | Grass | R32 | William Coghlan | 2-6 8-6 6-3 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.