Warren (shoulder) tossed a bullpen session at the Yankees' alternate site Sunday, Conor Foley of The Scranton Times-Tribune reports.
Warren was shut down in mid-March due to a sore right shoulder, ending his bid for breaking camp as a member of New York's bullpen. He seems to be making solid progress in his recovery since spring training concluded, potentially putting him on track to be ready to go when Triple-A Scranton/Wilkes-Barre begins its season in May.