Florian Lakat defeated Christian Samuelsson 6-4 6-4 in the M25 Stockholm 1 round of 32 on hard. The upset overturned the form book — Christian Samuelsson came in leading the head-to-head 2–0, but Florian Lakat had been the form player, winning 4 of their last 7 on hard. Florian Lakat claimed a first win over Christian Samuelsson in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-09-18 | M25+H Plaisir 1 | R32 | hard | Christian Samuelsson | 7-5 6-1 |
| 2019-05-07 | M15 Karlskrona 1 | R32 | clay | Christian Samuelsson | 6-7(4) 6-2 6-4 |