BOSTON -- The Celtics shuffled their lineup for Game 4 of their Eastern Conference first-round series against the Cleveland Cavaliers by moving Jae Crowder into the starting lineup and rookie Marcus Smart to the bench. Crowder suffered a left knee sprain in the third quarter Sunday when he fell to the floor after being hit in the face by J.R. Smith, who was called for a flagrant-2 foul and ejected. The Cavaliers won Game 4, 101-93, to sweep the first-round series. The Celtics had decided to alter the starting lineup on Saturday when they practiced with Crowder in a starter's role, but the change might have occurred anyhow because Smart was tardy to the team's shootaround on Sunday morning after he overslept.  "Jae Crowder for Marcus Smart. I decided that [Saturday], just because Jae has been very good in this series," said Celtics coach Brad Stevens, whose team trails the Cavs 3-0 in the series. "We could have gone a couple...