I don't think Buehrle doesn't care. He's putting the team above himself which is fantastic, but to say he wouldn't want the opportunity to hold a nearly unbreakable record by himself most likely isn't true. He's said all the right things to the media as a professional should (looking at you, Bryce and Pap).
With two wins today, I give MB the ball tomorrow. Provided he's able to go at least 6 innings, I give him the rest of the innings out of the pen on Sunday vs Tampa under the assumption that home field is secured. So a few things have to break right for him, but if they do, I would give him every chance to reach 200 IP.