Kansas City, Mo. ? Royals pitcher Yordano Ventura has been put on the 15-day disabled list because of right ulnar nerve inflammation.

Ventura, Kansas City’s opening-day starter, is 3-6 with a 4.68 ERA in 12 starts. He left his June 12 outing with weakness and numbness in his right hand and fingers, then experienced hand cramps after a bullpen session Wednesday.

Ventura joins left-handed starters Danny Duffy and Jason Vargas on the disabled list.

The AL champions recalled right-hander Yohan Pino from Triple-A Omaha on Thursday, and he is to take Ventura’s turn today against Boston. Pino was 4-2 with a 4.93 ERA with Omaha and 0-1 with 0.64 ERA in six relief appearances this season with Kansas City.