01/By surface
each with its own count, at equal weight
Hard
1-0
K. leads 1-0 in 1 meeting on hard
Clay
1-0
K. leads 1-0 in 1 meeting on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, K. first |
|---|---|---|---|---|---|---|
| May 22, 2015 | Nürnberger VersicherungscupInternational | clay | semifinal | Knapp K. | 6-0, 6-2 | 48 v 98 |
| Jan 28, 2014 | Open GDF SuezPremier | hard | 1st round | Knapp K. | 6-4, 6-1 | 45 v 99 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Knapp K. and Arruabarrena L. each carry the table against every opponent faced.