De Vreede's first Professional Darts Corporation (PDC) event was the 2009 German Darts Championship where he lost 6–4 to Vincent van der Voort in the last 64. He entered Qualifying School in January 2013 in an attempt to play full-time in the PDC and almost succeeded in the third event as he reached the final round before being edged out 6–5 by Campbell Jackson. However, after all four days had been completed he had done enough to finish fifth on the Q School Order of Merit and earn a two-year tour card. In May he reached the quarter-finals of the World Youth Championship, but was beaten 6–3 by Arron Monk. De Vreede made his European Tour debut in 2014 at the Gibraltar Darts Trophy and was beaten 6–3 by Adam Hunt in the first round. He went one better at the European Darts Open by losing 6–1 to Kim Huybrechts in the second round. When Richie Burnett withdrew from the 2015 PDC World Darts Championship due to personal reasons, De Vreede received a place in the draw through the European Pro Tour Order of Merit. In his debut in the event, De Vreede played Dave Chisnall in the first round and was beaten 3–0, missing one set dart in the third.