Isaac Okoro, the Cleveland Cavaliers' defense-first wing, will not play against the Boston Celtics due to a right shoulder AC joint sprain. Okoro, who began the season as a starter, has transitioned to a reserve role following Max Strus's return from injury. Despite limited scoring, he contributes significantly to the Cavaliers' defensive efforts. Meanwhile, the Cavaliers lead the league with a 40-9 record, outpacing the Celtics, who hold a 35-15 record. The Celtics, fully healthy for the matchup, are looking to close the gap in the Eastern Conference standings.