Williams (knee) is questionable for Friday's matchup against the Celtics.

Williams took Tuesday's loss to the Magic off for rest, and he may sit out again Friday. If that's the case, look for Duop Reath and Yang Hansen to potentially see increased roles.

Davis won't return to Thursday's game against the Warriors due to right groin spasms. He posted three points (1-4 FG, 1-4 FT), three rebounds, two blocks and one steal in 11 minutes prior to departing.

Davis exited with 8:50 left in the second quarter after he appeared to suffer the injury while running up the court in transition. After being evaluated at halftime, Davis was ruled out for the rest of the game at the beginning of the second half. The big man will likely be sent in for further testing as the Mavericks look to determine the extent of his injury, so for the time being, his status for the team's next game Saturday in Sacramento is in question.

Sengun (calf) is available for Thursday's game against the Lakers, Will Guillory of The Athletic reports.

Despite calf tightness, Sengun will play on Christmas Day. In December, he's averaging 24.6 points, 9.6 rebounds, 6.8 assists, 2.4 steals and 1.5 blocks in 35.1 minutes.

Davis appeared to injure his leg during the second quarter of Thursday's game against the Warriors and walked to the locker room, Anthony Slater of ESPN.com reports.

It's not exactly clear what sort of injury Davis is dealing with. He should be considered questionable to return.

Plumlee (groin) will not play in Friday's matchup against the Magic.

With Plumlee and Ryan Kalkbrenner (elbow) sidelined, Moussa Diabate should continue starting and seeing an expanded role.

Kalkbrenner (elbow) will be sidelined for Friday's game against the Magic.

Friday will mark a third straight absence for the rookie center. With Mason Plumlee (groin) out as well, Moussa Diabate should continue to start and see an expanded role.

Jackson (concussion) is out for Friday's matchup against the Celtics, Dustin Dopirak of The Indianapolis Star reports.

Jackson will sit out a second straight game due to a concussion. That should result in potentially more minutes for Jay Huff, James Wiseman and Tony Bradley.

Boucher is out for Friday's game against the Pacers due to personal reasons.

Boucher is not a regular part of Boston's rotation, so his absence won't affect the team significantly.

Joel Embiid is questionable for Friday's game against the Bulls due to right knee injury management, Adam Aaronson of PhillyVoice.com reports.

Embiid is coming off a strong performance against the Nets on Dec. 23 but may sit out to give his knee a rest. If he's sidelined, more minutes would be in store for Andre Drummond and Adem Bona.

Horford (back) will be available for Thursday's game against the Mavericks.

Horford hasn't played since Dec. 4 but will finally be back in action. In his 13 appearances, he's averaged 5.6 points, 4.4 rebounds, 2.0 assists, 1.0 steals and 1.0 blocks in 21.5 minutes.