Dodgers starter Zack Greinke, on the 15-day disabled list, threw another bullpen session on Tuesday but told MLB.com he will not be able to advance to a game situation until his collarbone heals.

"The main concern is running into people," Greinke said.

The right-hander added that his pitching arm strength is "pretty good" and has taken a couple of "dry swings" with a bat, "but I didn't try to hit an imaginary home run."

"I feel more than you would with a normal arm, but not anything major," Greinke said.