Why isn't Chris Britton in the ML's?

People will say that this rule is a result of the Joba rules and that they should be gotten rid of. Just remember that Joba is a starter and will be helpignt he team more later on. In AAA Chris Britton has been blowing hitters away all season. He also did this with the Orioles last year in the ML's. He can do better than Ron Villone and Sean Henn can't he? Also, just a weird not but when the 10th inning started it was past midnight here in New York so technically Joba had all of Monday off and should have been available right? :D We probably can't call this a Joe Torre loss though....