Head to head
3
Hard
3
Ivo Karlovic's wins on the left · Steve Johnson's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (6)
| 2016 | Vienna | Hard | R32 | Ivo Karlovic | 7-6(5) 6-3 |
| 2016 | Washington | Hard | SF | Ivo Karlovic | 6-4 6-4 |
| 2015 | Indian Wells Masters | Hard | R64 | Steve Johnson | 6-3 7-6(5) |
| 2015 | Delray Beach | Hard | QF | Ivo Karlovic | 6-2 7-6(4) |
| 2014 | Washington | Hard | R16 | Steve Johnson | 3-6 7-6(4) 7-6(7) |
| 2013 | San Jose | Hard | R32 | Steve Johnson | 6-7(2) 6-4 7-6(6) |
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.