Eduardo Nunez to undergo MRI

NEW YORK -- New York Yankees infielder Eduardo Nunez (oblique) is going for an MRI after he suffered a setback Tuesday as his left oblique flared up while he took swings, according to general manager Brian Cashman.

Nunez has missed the past 27 games since being placed on the disabled list, retroactive to May 6.

"I guess we thought he was ready to go again, and he took swings today, and I guess he's not ready to go again," Yankees manager Joe Girardi said.

Nunez participated in drills a few days ago, including work with medicine balls, and said he felt great and would try to swing again. It didn't go as planned, and the team will continue to wait out an injury that has taken longer to heal than the team had projected.

In May, when he suffered the injury, the Yankees gave Nunez a few days to try to see if he could play, but it's now been almost a month.

"It's kind of how the year's gone in a sense," Girardi said in reference to the team's long list of players on the disabled list. "We thought we would get him back after a week of sitting him down and he wasn't ready to go. Obliques are hard muscles to heal sometime. You feel pretty good doing everyday stuff but when you have to do that rotation it hurts, and that's what he's going through."

The infielder suffered the injury on May 5 when he left a game against Oakland in the fifth inning with tightness in his left rib cage. Nunez was originally diagnosed as day to day after an MRI came back negative, and he hoped to return in the next game. He even said after that game that his first thought when he felt it flare up was whether it had to do with food he'd eaten.

"You slowly go through a series of tests and as you clear each test you take the next step," Girardi said of Nunez's recovery. "That last step of swinging is the one that seems to get him."

In his limited playing time this year, Nunez has posted career-low numbers as he's hitting just .200 with a .290 on-base percentage and a .275 slugging percentage. In 2012, appearing in 38 games, Nunez posted career-best numbers as he hit .292 with a .330 on-base percentage and a .393 slugging percentage.

With Nunez unable to stay on the field, the Yankees have used seven different players at third base and shortstop. The Yankees have recently been using David Adams at third base while Jayson Nix has been at shortstop. The two have a combined 19 RBIs.