New Boston Celtics head coach Ime Udoka has a breakthrough case of COVID-19 and participated in the team's media day on Monday through Zoom.

Celtics spokesman Christian Megliola said Udoka, who is vaccinated, was asymptomatic and in the last day of his 10-day quarantine. Udoka is expected to be in person with the team when training camp starts on Tuesday, Megliola said.

Udoka, 43, was hired this summer to replace Brad Stevens, who stepped down as coach in June to replace Danny Ainge running the franchise's basketball operations. Udoka was an assistant with the Brooklyn Nets last season.

The Associated Press contributed to this report.