Cubs' starter Carlos Zambrano cracked a tooth on Thursday while on the mound after biting down on chewing gum, according to The Chicago Sun-Times. "I've been out to the mound many times to check pitchers' injuries but never for a cracked molar," Manager Lou Piniella said. "We needed a dentist." Zambrano, who expected to see a dentist Friday, said he thinks "it's the gum. It has a lot of sugar, and I keep telling my daughter not to eat a lot of gum. I'm not a good example."