"We're going to try to step up and fill that void for a brief period of time," Warren said.
Yankees closer Robertson headed to disabled list →
"I couldn't make quality pitches when I needed to, couldn't put guys away and it cost us," Warren said. "The whole time I kept thinking I was one pitch from getting out of it, but I couldn't quite make that pitch."
Bullpen melts down in Yanks 11-5 loss to Rays →