"That's the guy, the best guy we have," White Sox manager Ozzie Guillen said Monday before Game 4.
The change means Javier Vazquez, whom the Sox no longer trust in their biggest games, gets bumped. It also means that Vazquez and left-hander Clayton Richard will be available in long relief -- not only in Game 5, but in Game 4 later today if Gavin Floyd is chased early.
"Right now our bullpen is fresh," Guillen said. "Right now, we see Floyd and as soon as Floyd comes out and it's not (going) the way we thought he is going to be, you are going to see a couple of guys up right away.
"We can't sit down and hope for one good inning. And you are going to see Richard up right away. Like (Sunday), we are going to bring (Matt) Thornton in the sixth because I thought we need to get that done in the sixth in case (John) Danks was in trouble. And you know, you don't see Thornton in the sixth during the season.
"But now, Thornton, (Scott) Linebrink, you're going to see them early in the game if we have to."