The Yankees have added newly acquired RHP Adam Warren to the active roster, and have optioned LHP Chasen Shreve to Triple-A Scranton-Wilkes/Barre, the team announced before Tuesday's game.
The team also announced that RHP Anthony Swarzak will now wear #41.
Warren has a 5.91 ERA and 1.43 WHIP in 35.0 innings in 2016, all with the Chicago Cubs. He was drafted by the Yankees in 2009 and spent his first six years with the organization before being traded to the Cubs in the deal that brought Starlin Castro to New York last offseason.
Warren returns to New York as part of the trade that sent Aroldis Chapman to the Cubs.
Shreve has appeared in 24 games for the Yankees this season, throwing 23.0 innings for a 4.30 ERA and 1.09 WHIP. Shreve racked up 20 strikeouts in his 23 innings.