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6/20/2013 10:11 P.M. ET

Dodgers recall Herrera from Triple-A, option Withrow

SAN DIEGO -- The Dodgers recalled utility man Elian Herrera from Triple-A Albuquerque on Thursday and optioned reliever Chris Withrow to the Isotopes.

The move was made to balance the roster after the Interleague series with the Yankees, when the Dodgers carried 13 pitchers.

Herrera made a one-game cameo with the Dodgers in May, and he filled in nicely last year when second baseman Mark Ellis was disabled.

Withrow, a former first-round pick, had a 5.40 ERA in three appearances since a June 11 promotion, including two perfect innings in Wednesday's doubleheader against the Yankees.

Mattingly: Puig needs to earn All-Star selection

SAN DIEGO -- Don Mattingly isn't ready to support Yasiel Puig's All-Star candidacy after only 15 games, even if they've been a pretty spectacular 15 games.

"Right now? No," Mattingly said. "He doesn't have enough numbers better than everybody else. If he gets to the point where he puts up huge numbers, he should be considered."

Puig spent the first two months in the Minor Leagues, recalled from Double-A Chattanooga on June 3. Since then, he's assaulted the record books by hitting .474 with five homers and 11 RBIs.

"Who would you take him over?" Mattingly asked. "It's like the [Bryce] Harper thing last year. He should earn it. If you earn it, you should make it."

Mattingly said he understands the school of thought that the team should be selected based on fan appeal, but he just disagrees for a logical baseball reason.

"Not if you're saying you have the home-field advantage [of the World Series to the winner]," he said. "Then you should earn it. I want to support my player. If he plays well enough, he should make it. I want Hanley [Ramirez] and Adrian [Gonzalez], but I want the guys who deserve it to make it. I'm not saying they're not All-Star caliber, but they still have to earn the All-Star."

Mattingly said he wouldn't object if Puig participated in the Home Run Derby.

"He'd probably love it," he said.

Injury updates: Kemp inching closer to rehab assignment

SAN DIEGO -- Disabled outfielder Matt Kemp said he had a "very good day" working out his healing right hamstring, but he still hasn't tested it running the bases, which would be the final hurdle before beginning a Minor League rehab assignment.

Dodgers manager Don Mattingly said he was still hopeful Kemp would advance to the rehab assignment by early next week, which would allow him to be activated by next weekend's home series against Philadelphia.

But Mattingly cautioned that such a timetable was only his hope, not anything sanctioned by the medical department.

Mattingly said he assumed one of his other disabled outfielders, Carl Crawford, would shift his workouts from Arizona to Los Angeles when the club returns after the weekend series in San Diego, but Crawford was still "behind Matt" and isn't close to a rehab assignment.

Third disabled outfielder Scott Van Slyke (strained shoulder) is ready for a rehab assignment and will start it Friday night for Triple-A Albuquerque.

Disabled pitcher Ted Lilly (strained neck) met the club in San Diego and Mattingly said there's a chance Lilly would throw a bullpen session before the series ends.

Magill, Palmer likely candidates to start Sunday

SAN DIEGO -- Manager Don Mattingly said he still wasn't ready to announce the Dodgers' starting pitcher for Sunday against the Padres.

Although his removal after two innings for Triple-A Albuquerque on Wednesday night seemed to be a tipoff it would be rookie Matt Magill, his Isotopes teammate Matt Palmer is still under consideration, even though he's not on the 40-man roster.

A 34-year-old journeyman right-hander, Palmer allowed one run over seven innings Tuesday night and is 3-3 with a 4.26 ERA in 11 starts for Albuquerque after missing most of April recovering from Spring Training knee surgery.

In addition to his sharper recent form, Palmer is 13-7 lifetime in the Major Leagues, including an 11-2 season with the Angels in 2009.

Magill is on the 40-man roster, which is why he's been recalled three times this year to replace injured starters.

On April 27 against Milwaukee in place of the injured Stephen Fife, Magill debuted impressively, allowing two runs in 6 2/3 innings. But on June 2 in Denver when Hyun-Jin Ryu had a bruised foot, Magill walked nine in six innings and allowed four home runs. On June 9 against Atlanta when Ted Lilly couldn't start, Magill walked six more in 3 2/3 innings.

Now, with the bullpen's usage in Wednesday's doubleheader, the Thursday option to Albuquerque of reliever Chris Withrow and no off-days before Sunday, the Dodgers can't afford another short start from Magill.

Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.