Head to head
Rivalry summary
John Isner and Donald Young met 4 times on the ATP tour between 2008 and 2017. John Isner leads the head-to-head 3–1 against Donald Young. By surface, Isner leads 3–1 on hard.
3
Hard
1
John Isner's wins on the left · Donald Young's on the right · bar lengths share one scale
All meetings (4)
| 2017 | Memphis | Hard | QF | Donald Young | 7-6(5) 3-6 7-6(6) |
| 2014 | Miami Masters | Hard | R64 | John Isner | 6-7(5) 6-3 6-4 |
| 2012 | Memphis | Hard | R16 | John Isner | 7-6(3) 6-4 |
| 2008 | Washington | Hard | R16 | John Isner | 6-4 7-6(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.