Borowski is supposed to start throwing, but even so, there's no guarantee that his velocity is back. If he starts throwing and still in the 70s, he's going to get shut down for another month.
IF/When Borowski comes back he will go right back into being the closer. Our pen is a mess w/o him. Kobayashi might get a shot at closing if Borowski gets shut down again. But the fact that Borowski gets it done, however ugly it is, gives the Tribe's pen the best situation.
Last April he got shelled, blowing a couple of saves in amazing fashion, one at oakland, and another with a walk off grand slam to ARod...he got through the rest of the season w/o many more disasters.
But lets face it. Betancourt has been lights out as a setup man, and never had much success closing, even before this season. It's a no-brainer that he be left as an 8th inning guy. unfortunately the mess in the bullpen doesn't allow that right now.
Jensen Lewis won't get thrown into the closers role yet. He's young, called up last season, and I think Wedge's experiment with Carmona closing in 2006 scared him away from throwing young guys into that role. He very well could be the closer for the team in the future. But it's not like he's got stuff in the 90's...he's just got a funky delivery and decent movement on his pitches right now.