Matthews was hurt as he began a drive early in the third quarter against the Mavericks.
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Matthews is third on the Blazers in scoring with a 16.1-point average. He had started all 60 of the team’s games including Thursday’s contest, a 94-75 Portland victory.
Matthews’ shoes at NBA All-Star Weekend. (Getty Images)
Portland does have a ready replacement in recently acquired Arron Afflalo, who took over after Matthews went down. Afflalo played 28 minutes and scored six points on 2-of-9 shooting.