Webb has been returned to the Yankees and assigned to Triple-A Scranton/Wilkes-Barre, Mark Feinsand of MLB.com reports.
Webb was a Rule 5 pick but he lost out on a spot in the Pirates' bullpen Friday and thus returns to his original team. The lefty posted a 3.59 ERA and an 82:23 K:BB ratio in 36 appearances for Scranton/Wilkes-Barre last season, so there certainly is potential for a bullpen call-up later this season.