Head to head
Rivalry summary
Per Hjertquist and Birger Andersson met 1 times on the ATP tour between 1979 and 1979. Per Hjertquist leads the head-to-head 1–0 against Birger Andersson.
1
Clay
0
Per Hjertquist's wins on the left · Birger Andersson's on the right · bar lengths share one scale
All meetings (1)
| 1979 | Madrid | Clay | R64 | Per Hjertquist | 5-7 6-3 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.