Febles tore ligaments in the finger while sliding into second against Tampa Bay on Friday. He left the game immediately and has not played since.
After a re-examination in Kansas City on Monday, the finger was placed in a splint and Febles was put on the 15-day disabled list.
"It hurts us tremendously, " said manager Tony Muser.
The 22-year-old Febles was hitting .267 with 10 home runs and 50 RBIs and was second in the AL with nine triples.
Febles said he had a similar injury in the minor leagues that was not as serious. Asked whether he felt frustrated, he said, "No. Well, maybe a little bit."
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