Carril, 70, was admitted to Sutter Memorial Hospital on Sunday after experiencing discomfort.
Since mid-July he has been experiencing discomfort after undergoing hip surgery.
A spokeswoman advised anyone experiencing discomfort to stay indoors and reduce their activity.
Niese was placed on the disabled list on June 21 after experiencing discomfort in his shoulder.
"Anyone experiencing discomfort such as sore eyes, cough or sore throat should consider reducing activity, particularly outdoors".
Still experiencing discomfort from the surgery, Mrs. Rubio complained to her bosses that her right arm had begun to hurt.
The team said Carril was admitted to Sutter Memorial Hospital on Sunday after experiencing discomfort earlier in the day.
Mr. Arzt, who spoke with Mr. Koch earlier on Monday, said he seemed to be experiencing "discomfort".
Ryan, the Hall of Fame pitcher, was hospitalized after experiencing discomfort at his home in Georgetown, Tex., on Sunday morning.
Grosek was still experiencing discomfort and a ringing in his right ear, one day after being hit in the face by a BRYAN BERARD slap shot.
Three people with ties to the Yankees who were briefed about Johnson's status confirmed that Johnson was experiencing discomfort in his back and was questionable for the start.
