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06/12/12 9:15 PM ET

Cespedes set to return on Wednesday

DENVER -- Yoenis Cespedes was held out of the starting lineup for the fourth straight game on Tuesday, but don't count on him making it five in a row.

A's manager Bob Melvin confirmed after Tuesday's 8-5 victory over the Rockies that Cespedes will start Wednesday's contest.

The A's outfielder, sidelined since last Thursday with a strained left hamstring, was deemed available off the bench as a pinch-hitting option on Tuesday for the first of a three-game series with the Rockies.

The A's are 19-16 with Cespedes in the lineup and 8-19 when he doesn't play.

He ran a lot better [on Tuesday]," Melvin said before Tuesday's game. "He's definitely an option off the bench and could see a start here very soon."

McCarthy back to Oakland for MRI

DENVER -- Another bout of right shoulder soreness has sidelined A's starter Brandon McCarthy, who has been scratched from his scheduled Wednesday start and sent back to the Bay Area for an MRI.

McCarthy, 28, has missed time with the same injury on three separate occasions this season, and the most recent instance could potentially call for a second stint on the disabled list. Moreover, the soreness in his scapula has surfaced in four of the past five seasons, including last year, when he was out for six weeks.

"Pretty similar to what we've seen in the past, so we sent him home for an MRI and so forth, and we'll see how that goes," A's manager Bob Melvin said. "It's always kind of the same thing. He knows himself pretty well when it's sore and was experiencing that the last couple of days. We try to be proactive here and try to keep him healthy."

Because of Monday's off-day, the A's are able to push up Tommy Milone and Jarrod Parker in the rotation, with the southpaw going Wednesday and the right-hander Thursday in Denver.

In 11 starts this season, McCarthy is 5-3 with a 2.79 ERA. His place in the rotation, whether on a temporary or permanent basis, is likely to be filled by either Graham Godfrey or Tyson Ross, with Brad Peacock also an option.

  • 142 wins
  • 110 wins

Godfrey has been dominant at Triple-A Sacramento, going 5-0 with a 1.05 ERA in eight starts with the River Cats, compared to 0-4, 6.43 ERA in five games -- four of them starts -- with the A's.

Ross has fared well at Sacramento since being demoted by Oakland, posting a 2.45 ERA with 11 strikeouts next to five walks in 22 innings over four starts.

Worth noting

• Lefty reliever Jordan Norberto (shoulder) is eligible to come off the disabled list on Friday. Though Melvin said Norberto is feeling "100 percent better," the manager wasn't ready to confirm whether he would be activated then.

Jane Lee is a reporter for MLB.com. Read her blog, Major Lee-ague, and follow her on Twitter @JaneMLB. This story was not subject to the approval of Major League Baseball or its clubs.