Bates suffered a hamstring injury during warmups prior to Thursday's game against the Bears, Ivan Lambert of USA Today reports.
Bates was expected to fill in as the Commanders' starting tight end with Logan Thomas (calf) sidelined. He had tallied seven receptions combined across his last two games, but with Bates dealing with a hamstring injury, Cole Turner was next up for the team's TE snaps versus Chicago on Thursday.