CLEVELAND -- Outfielder Darin Mastroianni, who is on the 15-day disabled list with a left ankle stress reaction, is expected to remain in a walking boot another week, Twins assistant general manager Rob Antony said on Friday.
Mastroianni was originally scheduled to have the boot taken off this week, but after undergoing another MRI exam, it was decided that he needs to remain in the boot for one more week.
"I don't think it's healed as much as they had hoped," Antony said. "I don't have a timeline. It's just taking a little bit longer than we had hoped. Everybody heals differently."
Mastroianni, who last played on April 15, will also need to go on a rehab assignment once he's cleared for baseball activities. So while there's no official timetable on his return, he's expected to be out another three weeks.
"When he does come back, it's going to take some time for baseball activity, so he'll need to go get some at-bats to get back into game shape," Antony said. "Once we get back home [on Thursday], we'll know more. He should be out of the boot by then."
With Mastroianni out, Wilkin Ramirez will continue to serve as the backup center fielder behind rookie Aaron Hicks.
Rhett Bollinger is a reporter for MLB.com. Read his blog, Bollinger Beat, and follow him on Twitter @RhettBollinger. This story was not subject to the approval of Major League Baseball or its clubs.