New York Yankees' Derek Jeter takes batting practice before the Yankees' baseball game against the Tampa Bay Rays at Yankee Stadium on Friday, July 26, 2013, in New York. New York Yankees' Derek Jeter throws after fielding a grounder during batting practice before the Yankees' baseball against the Tampa Bay Rays at Yankee Stadium on Friday, July 26, 2013, in New York. New York Yankees' Derek Jeter signs autographs during batting practice before the Yankees' baseball against the Tampa Bay Rays at Yankee Stadium on Friday, July 26, 2013 in New York. NEW YORK (AP) - Where in the Yankees universe is Derek Jeter? The New York Yankees aren't saying. The 39-year-old captain was eligible to come off the disabled list Saturday. But he was sent to play in a simulated game at a location manager Joe Girardi won't disclose. Girardi says the Yankees want Jeter to test his strained right quadriceps without interruption. Guesses on Twitter regarding Jeter's whereabouts ranged from the Staten Island Yankees field to the Mets' Citi Field in Queens to PlayStation. For sure, he wasn't at the Yankees' minor league facility in Tampa, Fla., where Alex Rodriguez was rehabbing his strained left quadriceps on his 38th birthday. Also, Yankees designated hitter Travis Hafner was scheduled for an MRI on his shoulder. He was not in the lineup Saturday against Tampa Bay.