Carter has been diagnosed with mononucleosis and is without a timetable for a return, Gary Washburn of The Boston Globe reports.
1 player is out and 0 are listed as day-to-day, questionable or doubtful. Next game: vs Knicks, Fri, Oct 23 at 7:00 PM ET — game page and how to watch. The report comes from the league's official injury reports and is checked every 15 minutes; every change of status is logged below. See the rotation tracker for who picks up the minutes.
What each absence costs
League-wide →Wins lost over 82 games if he sits, from the season simulator run without him (baseline 52.3 wins, top-six chance 97%). Players on the report are highlighted.
Strength lost = minutes share × (on-court net rating − off-court net rating), from 2025-26 with whichever team he played for. Wins lost come from the season simulator run without him; a plus sign means the model has the team winning more without him. Rotation players with 300+ minutes last season.
Status changes
last 40- Sun, Oct 183 d ago→
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How to read the Celtics injury report
Out means the player will not play in the next game. Doubtful is roughly a 25% chance to play, Questionable about 50%, Probable 75%; Day-to-day is a short-term issue re-evaluated daily. The league requires teams to post their report by 5 PM ET the day before a game and update it at 1 PM ET on game day, so the most reliable version of this page is the one you read in the early afternoon Eastern time.
Estimated returns come from the team when they announce one; when the column shows a dash, no date has been given. Minutes per game are this season's averages once the season starts, so you can see how much of the rotation is on the shelf. For the salary side of a long absence, see the Celtics cap sheet.