Tobias Lund Andresen was in the developmental set-up at DSM for 2 years and Lorenzo Milesi joined in 2022 and impressed, including winning a stage at the Tour de l'Avenir. On the trio, DSM's head coach Rudi Kemna was full of praise, singling out Onley for special mention. "We’ve seen this come to fruition this year with some good support riding and very impressive performances when he has been the team’s finisher, especially in the latter part of the year."
Continuing, Kemna said, "It’s also important to remember that Oscar is still young, so we want to take the time for him to grow as an athlete and person in a natural way as he makes the step up to WorldTour level with our Men’s program," as
Team DSM bring their tally of riders for 2023 to the UCI maximum of 30.