As one of the two highest ranked players from PDC Development Tour, he received two years Tour card for season 2019 and 2020. He played both PDC Pro Tour and PDC Development Tour in 2019. Finishing 3rd overall in PDC Development Tour ranking, he secured his sport at the 2020 PDC World Darts Championship, because both the winner and the second, Ted Evetts and Luke Humphries, qualified for the championship via Pro Tour. Nentjes faced Kim Huybrechts in the first round, in a very close match he eventually lost 2–3.