The lineup for the NBA Slam Dunk Contest has been unveiled, featuring defending champion Mac McClung.

The rest of the lineup includes Boston Celtics star Jaylen Brown and rookies Jaime Jaquez Jr. of the Miami Heat and Jacob Toppin of the New York Knicks, as reported by NBA insider Shams Charania.

McClung, the reigning Slam Dunk Contest champion representing the G League’s Osceola Magic, is poised to defend his title against formidable competition in Brown and the talented rookies Jaquez Jr. and Toppin.