Warren is recovering from throwing 84 pitches in Wednesday's game against the Red Sox, and right-hander Shawn Kelley has been used in three of the club's first four games.
That prompted New York to scrap Hughes' scheduled rehabilitation start at Triple-A, summoning him to Detroit instead. Hughes' last outing came on Monday for Class A Tampa in an extended spring training game, throwing seven scoreless innings.
"We don't really have a long guy if we start Phelpsie today, so we felt if something were to happen with Phelpsie, we'd have a little trouble there," Girardi said. "It was kind of out of necessity. We wanted him to make one more start, but he's going to make it here."
Phelps made a team-leading seven starts in Spring Training, but his only appearance of the season thus far has come in relief, tossing 1 1/3 innings behind CC Sabathia's start on Opening Day against the Red Sox.
Bryan Hoch is a reporter for MLB.com. Follow him on Twitter @bryanhoch and read his MLBlog, Bombers Beat. This story was not subject to the approval of Major League Baseball or its clubs.