On the junior tour, Wessels has a career high ITF junior ranking of 17 achieved in May 2016. Wessels has reached the doubles semifinals at three of the four junior grand slams, including the
2015 Australian Open,
2015 US Open and the
2016 Wimbledon Championships. Wessels made his ATP main draw debut at the
2016 German Open, where he upset
Steven Diez in the first round. This victory made him the youngest player to win a main draw match on the
2016 ATP World Tour at that time. Ranked No. 347, he qualified for his home tournament at the
2023 Halle Open having received a wildcard for the qualifying competition. ==ITF Futures/World Tennis Tour finals==