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Chamberlain, who has not given up a run in his past eight outings, said he’s been receiving routine treatment on the area where his forearm meets his elbow for about 10 days or two weeks. He said it hasn’t bothered him in games, but his elbow would tighten up after he pitched.

“It’s just one of those things when it was at the point where I was like, you know what, I’ve got to say something,” said Chamberlain, who threw 35 pitches in his most recent outing Sunday. “I didn’t feel it when I pitched. It was when I was done. That’s kind of I guess the thing that kind of raised the red flag for me.”

The right-hander had an MRI exam Wednesday that revealed a strained flexor muscle. He will be shut down for 10 to 14 days before beginning a throwing program and is likely to miss several weeks.

He was placed on the DL retroactive to June 6.

“His stuff had been great,” Girardi said.

The Yankees traded Marquez to Chicago as part of a package for right fielder Nick Swisher in November 2008. He was signed to a major league contract Wednesday and added to the 25-man roster, and his flight was expected to land in New York about 5 p.m.

To make room for Marquez on the 40-man roster, the Yankees transferred reserve infielder Eric Chavez (broken left foot) from the 15-day disabled list to the 60-day DL.

Sanit was with the Yankees from May 12-21, making three relief appearances. He allowed six earned runs and eight hits in 6 1-3 innings.