MINNEAPOLIS -- Jayson Nix was declared day-to-day on Tuesday with what was described as a mild hamstring issue. Wednesday, naturally, brought news of a DL stint. An MRI performed earlier in the day on the veteran infielder revealed a Grade 2 hamstring strain.
"I didn't expect it to come back that bad," said Nix, who felt the injury Monday night after legging out a ninth-inning double. Grade 2 strains typically take longer than 15 days to heal, meaning Nix could be sidelined for a month or more.
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"It's hard to predict because each guy heals different,'' Joe Girardi said.
"Our hope is to get him back [just] after the All-Star break but we're going to have to wait and see."
Luis Cruz, released last week by the Dodgers, signed with the Yankees early Wednesday morning and was in the lineup as the starting shortstop Wednesday night. He appeared in 45 games this season with the Dodgers, starting 20 games at third and 10 at shortstop, hitting .127 (15-for-118) with one homer and six RBIs. Cruz, who came up as a shortstop, did hit .297 with six homers and 40 RBIs in 78 games last season with the Dodgers.
"I needed a fresh start to regroup myself, and I think this is a good place," Cruz said. "I'm ready to go and I'm excited to be here."
For the second time in three days, Derek Jeter (ankle) ran the bases, doing so during his simulated at-bats at Steinbrenner Field. Jeter had two singles, a double and three grounders in six at-bats.
Nuñez getting closer
Eduardo Nuñez, on the DL since May 6 with a left oblique strain, is playing in rehab games, but Girardi said it's unlikely the shortstop will be ready by Friday, the first day he's eligible to return.
"He's still got a little ways to go," Girardi said, though he didn't rule out the possibility of Nunez getting back just before the All-Star break.
Test for Mariano
Members of MLB's drug enforcement program were on hand before last nightWednesday night's game to administer random testing. Among the players tested: Mariano Rivera, who said his last test came during spring training.