The Los Angeles Dodgers are concerned enough about some discomfort in Zack Greinke's elbow that they scratched his between-starts bullpen session heading into Thursday's outing.

They are still hopeful Greinke will start Thursday, but it's a situation they're monitoring closely, particularly because they already have three starting pitchers on the 15-day disabled list, with two likely lost for the rest of the season.

"He was having some soreness and things like that," Dodgers manager Don Mattingly said. "I guess you would have to say something's come up medically, but nothing that's hit our radar or on my daily e-mails [of injuries]."