Who should start Saturday against Boston?

OAKLAND, Calif -- Rich Harden's struggles on Saturday against Oakland bring up the question: Should he pitch again when his spot is due to come up Saturday in Arlington against the Red Sox?

The Rangers don't like to skip starters, so let's assume that they do want a fifth guy to start in that spot. Manager Ron Washington said just after Harden's start that right now, Harden is penciled into that spot. But he also acknowledged that he hadn't had a chance to sit down with his coaches and discuss the matter.

So if it's not Harden, who would it be? Some of the candidates (in no particular order):

* Matt Harrison: The lefty has a 1.52 ERA (4 earned runs in 23 2/3 innings) in his last 12 outings and has a 2.25 relief ERA total. He's allowed two runs in 12 innings since being recalled from Triple-A Oklahoma City on July 10. Harrison started earlier this season and could certainly slip back in the rotation for now. But do the Rangers want to take a second lefty out of the bullpen while Derek Holland isn't back in the majors? Harrison got two key lefties late in a close game in Seattle, giving the club an option besides Darren Oliver, who has had a heavy workload.

* Scott Feldman: The righty was in the rotation before Harden bumped him out of it. And while his line on Saturday may look pedestrian -- three runs allowed in 4 2/3 innings -- he was better than that. Two of the runs scored on sacrifice flies and the big foul territory didn't help him, either. He's already pretty stretched out, so that wouldn't be an issue by Saturday, either.

* Michael Kirkman: The Triple-A Oklahoma City starter is 11-3 with a 2.99 ERA in the PCL this season (21 starts). He's thrown 120 1/3 innings and opponents are batting .233 against him. Kirkman's schedule has him starting Sunday, so he could easily slip into that spot if the team chooses. He's on the 40-man roster and is a likely September callup anyway.

* Derek Holland: He started on Saturday for Triple-A Oklahoma City and gave up no runs in six innings with three strikeouts and two walks. But he could need another start or two before he's fully ready to return (we'll find out more about that today). If Holland is healthy, he's certainly a candidate.

Who would you like to see start? I'd really like to see Kirkman just because I'm curious. Let me know what you think.