KANSAS CITY — Yankees closer Mariano Rivera was carted off the field at Kauffman Stadium on Thursday after appearing to suffer a right knee injury shagging fly balls during batting practice.

The Yankees were hitting on the diamond as Rivera received attention in the outfield, with manager Joe Girardi among those watching the all-time saves leader be propped onto the back of a flatbed truck and driven around the warning track.

No further information was immediately available about Rivera’s injury. Rivera regularly shags fly balls in center field during batting practice and has spoken about hoping to play the position in a game before he retires.