There's still time for Ranaudo, De La Rosa or possibly even Steven Wright to emerge as the preferred sixth starter. But I agree that what we've seen from Workman so far is very encouraging. The Rays are a very good offensive team, some ballpark independent stats suggest they have the best offense in baseball. And Workman looked great against them.
I also agree that it would be nice to pick up two relievers. A quality two month starting pitcher rental seems prohibitively expensive in terms of prospects considering Buchholz is expected to return, Doubront has improved and we have some backup options already in our system. But I would like us to sign Brian Wilson and trade for someone like Addison Reed, Jesse Crain or Francisco Rodriguez. We don't need a world beater closer, just a solid set up man who won't cost too much of an overpay in a trade.