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7/6/2013 1:01 P.M. ET

Forearm strain lands Phelps on disabled list

NEW YORK -- On Thursday, right-hander David Phelps pitched 6 1/3 innings and gave up four runs in a win over the Twins. On Saturday, the Yankees placed him on the 15-day disabled list with a strained right forearm.

"He actually threw the ball really well," manager Joe Girardi said, "but ... he actually said he was a little sore, but higher [in his arm]. It's kind of strange."

After undergoing an MRI on Friday, Phelps was diagnosed with the strain. The MRI did not reveal any ligament damage.

Phelps will be shut down for 10 days before he can begin throwing again. The team discussed having him skip one start, but with the All-Star break approaching, it was decided it was best to put him on the DL to make sure he is completely healthy.

Phelps is 6-5 with a 5.01 ERA over 12 starts.

Hiroki Kiroda will now start Sunday's game against the Orioles. Phil Hughes will be pushed back to Monday, against the Royals, and CC Sabathia and Ivan Nova will pitch on Tuesday and Wednesday, respectively.

In corresponding moves, shortstop Eduardo Nunez was activated from the 60-day DL to take Phelps' place on the roster, and first baseman Mark Teixeira was transferred to the 60-day DL.

Oblique healed, Nunez back in pinstripes

NEW YORK -- After spending two months on the disabled list with a strained left oblique, Eduardo Nunez is back in pinstripes, starting at shortstop and batting eighth against the Orioles on Saturday.

In corresponding moves, right-hander David Phelps was placed on the DL with a strained forearm, and first baseman Mark Teixeira was transferred to the 60-day DL.

Nunez sustained the oblique injury on May 5 and was placed on the DL the next day. Prior to the injury, he was batting .200 with four RBIs, nine runs and two stolen bases.

The recovery process was longer than he expected, though. He encountered multiple setbacks while rehabbing in Tampa, Fla., as he continued to feel pain when attempting to swing a bat.

"I never thought that [it would take this long]," Nunez said. "Maybe one week. But I had big setbacks twice. It was tough, it was tough. But now I'm here again."

But Nunez made it through his rehab assignment without incident, batting .375 with an RBI and two stolen bases over six games between Class A and Double-A.

With Derek Jeter on a rehab assignment and Jayson Nix on the DL with an injured hamstring, manager Joe Girardi said that Nunez would likely be his everyday shortstop for the time being.

"Don't be surprised if I give him a day off here and there over the next week or so," Girardi said, "just because he's probably not equipped to play the next nine days in a row. He's probably not in that type of shape yet. I have to be smart about it."

Bombers bits

• Shortstop Derek Jeter, who is working his way back from a fractured left ankle, will begin his rehab assignment on Saturday with Triple-A Scranton/Wilkes-Barre in a 7:05 p.m. ET game against Lehigh Valley.

Pitcher Michael Pineda will make his final rehab start for the RailRiders in the same game. Working his way back from a shoulder injury, Pineda is 1-0 with a 2.60 ERA and 15 strikeouts over four Minor League starts. The Yankees will have to decide whether to keep him in Triple-A or have him join the Major League squad after the game.

• Third baseman Alex Rodriguez, who is recovering from offseason hip surgery, will make another rehab appearance on Saturday for Class A Tampa. He was scheduled to play pn Friday night, but the game was rained out.

Josh Vitale is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.