The White Sox need a closer after trading away Sergio Santos in the first of two offseason deals with the Toronto Blue Jays. The potential names for a replacements have included Matt Thornton, Jesse Crain and rookie Addison Reed.As a Sox fan I've seen what Thornton can do and I'll pass. Thrust in the role of closer last season, Thornton struggled mightily with his control. He had only been a starter and setup man prior to getting the nod to replace Bobby Jenks, and it proved to be a huge mistake. The same thing happened with lefty Chris Sale and perhaps that explains why he hasn't received much consideration this time around. We also have seen Crain in the closer's role for a game or two here and there but never full-time. Should that give us a sigh of relief? Not really.The closer may just be the second most important piece to the White Sox ...