Al Horford has tested positive for coronavirus and is quarantine. Jaylen Brown tested positive on Friday.

Source: Shams Charania/The Athletic

ANALYSIS: The Celtics are the first team to be struck by coronavirus this season. 

With Brown and Horford in quarantine, hopefully there will be no other cases on the Celtics and they will each make a swift recovery. 

Jayson Tatum was notably significantly affected by COVID-19 last season, even needing to use inhalers before games for the rest of the season.