"We spent a lot of time last night talking about the moves that we were going to make to get some extra pitching here and activate Tex," Yankees manager Joe Girardi said.
Nova was placed on the 15-day disabled list with an ulnar collateral ligament injury to his right elbow, and New York optioned infielder Scott Sizemore to Scranton/Wilkes-Barre. The club also designated right-hander Matt Daley for assignment.
Girardi said that it was a difficult decision to send down Sizemore, who had four hits in 13 at-bats (.308) with two doubles and four RBIs in five games after he returned from his second reconstructive knee surgery.
Dean Anna and Yangervis Solarte remain on the roster as reserve infielders. Girardi said that Anna's ability to play shortstop gave him an edge over Sizemore.
"It's tough. The kid did everything right," Girardi said of Sizemore. "Obviously, he has put himself back on the map. He's been hurt the last couple of years, but he helped us win a couple of games. Sometimes it comes down to a numbers game."
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.