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More Celtics bad news: Marcus Smart thumb injury and Kyrie Irving's knee a cause for concern?

Earlier today, the Boston Celtics announced that Daniel Theis would be out the rest of the season with a torn meniscus. The Celtics, already short-handed due to Jaylen Brown going through concussion protocol, have suffered on the injury front this season and could use a break from bad news.

Unfortunately it keeps coming. Marcus Smart reportedly has a sprain in his right thumb (the same hand he used to punch a picture frame earlier this year).

In addition, Kyrie Irving's knee could keep him sidelined for a few games:

Right thumb injury to Celtics guard Marcus Smart -- for now, called a sprain -- is under scrutiny with medical staff, league sources tell ESPN.