He injured his knee while warming up starting pitcher Jonathan Sanchez in the bullpen before a 7-5 victory Tuesday over the Cincinnati Reds. Perez caught the first inning, but left with a noticeable limp and was replaced by Cody Clark.
“Heading to KC today - Thanks to all the fans for the support. I will work hard to be back as soon as possible. God bless you,” Perez tweeted.
Royals manager Ned Yost said he went for a MRI Tuesday in Arizona.
The 21-year-old Perez hit .331 in 39 games with the Royals last season after a promotion on Aug. 10. He signed a five-year $7 million contract on Feb. 27 with a club option for three more years.
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