Philip Humber (facial contusion) has passed every test or exam "with flying colors," according to MLB.com. "This little thing could have been ugly, been bad later," White Sox manager Ozzie Guillen said. "That's the reason we did it. He's being checked by the doctors. The great thing about all this -- he feels good, he doesn't feel great, but he feels good." The White Sox were initially hoping Humber could make his next scheduled start after taking a Kosuke Fukudome comebacker off the area above his right eye on Thursday, but have decided to play things safe with their 28-year-old right-hander. Zach Stewart is expected to take his place in the rotation.