The presenter at the center of Novak Djokovic’s decision to boycott on-court interviews at the Australian Open has apologized to the 24-time Grand Slam champion, saying that he “overstepped the mark.” Channel 9 presenter Tony Jones was overlooking a group of Serbian fans while recording a dispatch from Melbourne Park Friday night.

Novak Djokovic declined a post-match TV interview after winning in the fourth round of the Australian Open after an on-air personality from the local Australian broadcaster of the tournament made negative comments about him in front of Serbian fans.

The 24-time Grand Slam champion opted out of a traditional on-court interview Sunday following his fourth-round win over Czechia’s Jiri Lehecka at the Australian Open, citing “insulting and offensive comments” made toward him by a presenter for Channel 9, which broadcasts the tournament, days prior.