LOS ANGELES - The Phillies will activate Cole Hamels from the disabled list, possibly as soon as at the conclusion of tonight's game and definitely before they arrive at the ballpark tomorrow.

Hamels will make his first start of the season tomorrow after missing the first 3 weeks of the season. But when Hamels arrives, who goes?

The Phils added an extra reliever in the form of veteran Shawn Camp on Friday, when they optioned starting pitching Jonathan Pettibone to Triple A Lehigh Valley. The 38-year-old Camp hadn't appeared in a game with the team entering yesterday.

B.J. Rosenberg is another candidate. Although the Phillies management and coaching staff like his arm - Rosenberg's fastball has averaged just over 94 mph this season - the 28-year-old reliever is in the middle of a retched stretch. In his previous three outings, Rosenberg had given up a hit or a walk to 10 of the 15 batters he faced, including three home runs.

Rosenberg didn't allow a run in his first five outings of 2014. But opponents were hitting .433 with a 1.318 OPS against him this season, and he nearly has as many walks (three) as he has strikeouts (four) in 6 1/3 innings.

"He has good stuff," Amaro said. "His location has been poor. He's getting whacked. But he has a good arm. He has to pitch better . . . When a guy doesn't have a whole lot of experience, you have to give them chances to find success."

Blog: ph.ly/HighCheese