Luis Garcia arrived at Citizens Bank Park on Friday sporting a 3.18 ERA. When he left Saturday evening, it was 4.50.

The Phillies have not received consistency from the bullpen, a position group viewed as their strength entering the season. Garcia's weekend struggles are just the latest example.

Over the team's six-game losing streak, the bullpen allowed multiple runs five times.

"Out of the bullpen we're just looking for consistency," Phillies manager Ryne Sandberg said after Saturday's 5-2 loss to the Colorado Rockies, "and that's basically what's lacked."

The bullpen allowed three more runs Saturday. Garcia, the Phillies' most-used reliever, was charged with two on top of the two he allowed Friday. Ken Giles was charged with one in Saturday's eighth inning, when Colorado's Troy Tulowitzki doubled off the top of the right-field wall and scored on Nolan Arenado's single.

"It's just quality strikes and working ahead in the count, and really having guys get on a roll out of the 'pen has been a struggle the last week or so," Sandberg said.

Revere in CF again

With Cody Asche taking over left field, Ben Revere will get most of his starts in right field.

But Revere will also likely see occasional starts back in his native center field, where he played all nine innings Saturday. Odubel Herrera has struggled at the plate recently - he's hitting .189 in May in 90 at-bats - and Revere's value to the team is highest when he's playing every day.

Revere, who enters the series finale against the Rockies hitting .263, singled and stole a base Saturday. His 155 stolen bases since 2011 rank third in the majors in that span, behind only Rajai Davis of the Detroit Tigers (173) and the New York Yankees' Jacoby Ellsbury (158).

Extra bases

The Phillies' defeat Saturday ensured their first series loss to the Rockies at Citizens Bank Park since August 2004. . . . Aaron Harang's 2.02 ERA through his first 11 starts of the season is a mere 0.03 worse than the mark Roy Halladay posted through 11 starts in 2010. . . . Closer Jonathan Papelbon has pitched just once since May 20.

- Jake Kaplan