The Yankees placed Poteet on the 15-day injured list Tuesday with a right triceps strain, Gary Phillips of the New York Daily News reports.
Poteet will be shut down from throwing for up to two weeks before being re-evaluated. He's fared well in four starts with the Yankees this season, posting a 2.14 ERA and 13:7 K:BB over 21 innings. However, with Gerrit Cole (elbow) due back this week, Poteet's future role was already looking uncertain.