NEW YORK -- Yankees reliever Jake Cousins felt pectoral discomfort after throwing a pair of batting practice sessions, another setback in his bid to return to the mound for the first time since last fall.
Cousins won't throw again for four or five days, manager Aaron Boone said Saturday.
Boone said ahead of spring training's opening workout that Cousins had a strained right forearm and was uncertain for the March 27 opener.
A 30-year-old right-hander, Cousins threw batting practice to injured slugger Giancarlo Stanton on May 6. Boone said Cousins pitched an additional session before the pec issue caused a shutdown.
"We don't think it's anything serious, but enough to hold him back a few days," Boone said.
Boone said Cousins had tests and that they didn't show any shoulder issues.
Cousins had a 2.37 ERA in 37 relief appearances last year, striking out 53 and walking 20 in 38 innings.
Boone said a date has not been set for Stanton to start a minor league injury rehabilitation assignment. The five-time All-Star has been sidelined since spring training with pain in the tendons of both elbows.
