Dodgers pitcher Zack Greinke is expected to return to the team today after flying to Los Angeles to receive an injection of platelet-rich plasma and anti-inflammatory medication in his right elbow Monday.

The right-hander, who signed a six-year, $159 million contract with the Dodgers in December, will try to resume his throwing program after two or three days' rest.

"I think everybody's being cautious," Dodgers manager Don Mattingly said.

Greinke complained of pain in the elbow last week and underwent an MRI exam that revealed no structural damage. He completed his regularly scheduled bullpen session Friday without incident, but the team said Greinke experienced "mild irritation" in the back of his elbow while throwing Sunday.

Hyun-Jin Ryu, who was scheduled to relieve Greinke in the Dodgers' exhibition game against the Milwaukee Brewers on Monday, started the game instead.

Dodgers right-hander Chad Billingsley missed the final five weeks of last season with a partially torn ulnar collateral ligament in his right elbow.

He's managed to avoid missing any of his spring training starts - and season-ending Tommy John surgery - after undergoing a series of PRP injections.

The Dodgers hope the same course of treatment works for Greinke.