Celtics' Marcus Smart announces positive coronavirus test Unknown 17:44 The Boston guard says he self-quarantined after he was tested last weekend. Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsChiefs quarterback Patrick Mahomes blasts home run at Royals celebrity softball gameNHL free agency rumors: Sabres closing in on massive deal with Jeff SkinnerJets hire Eagles' Joe Douglas to be new general managerThe Latest: Kerr says no more details about Durant's rehabJung hits 13th home run, Texas Tech beats Oklahoma State 8-6Raptors vs. Warriors: Live score, updates, highlights from Game 4 of NBA Finals