The Boston Celtics host the Oklahoma City Thunder Wednesday night in what has the potential to be an NBA Finals preview. Boston is the defending champion, and OKC has -- far and away -- been the best team in the Western Conference this season.

After Peyton Watson's foul on Jalen Williams, the All-Star slipped on the floor. He took a moment to get up before he held onto his hip area. He only played a few more possessions before being ruled out of the second half with a hip strain in the Oklahoma City Thunder's 140-127 loss to the Denver Nuggets.

Alexander and the Oklahoma City Thunder against Jayson Tatum and the reigning NBA champion Boston Celtics on Wednesday night at TD Garden in a possible NBA Finals preview. However, the Thunder will be without All-Star forward Jalen Williams,