World champion Luke Littler booked his place in the second round of the European Championship with a 6-3 victory over William O'Connor, while Michael van Gerwen was knocked out at the first-round stage.
Teenager Littler hit six 180s and averaged 105 across three darts in the best-of-11 contest. It was his first match since a surprise semi-final defeat at the World Youth Championship in early October. The world number one will next face Nathan Aspinall, who beat Cristo Reyes 6-3, in Dortmund as he aims to complete the set of major trophies by winning the European Championship.
"Obviously, [I've played] a few exhibitions, but yeah, just obviously been chilling out, practicing, and this is the one I really want," said Littler, 19. "I've just got to take it one game at a time, and obviously it's the last one missing, so I can't be putting too much pressure on myself. I'm just happy to get back on stage and do my job."
Van Gerwen, 37, faced fellow Dutchman Kevin Doets and, after falling 5-1 behind, the three-time world champion was comprehensively beaten 6-3. Doets, 28, will face Krzysztof Ratajski, who beat Dave Chisnall 6-2, in the last 16. Jonny Clayton and Josh Rock will also meet after winning 6-3 and 6-1 against Niko Springer and Chris Dobey respectively.
German Martin Schindler came through a deciding leg to beat Wessel Nijman 6-5, setting up a match against Jermaine Wattimena, who had beaten England's Ryan Joyce 6-3.
Source: BBC Sport · Summarized by HeadlinesBriefing