The Cardinals will need to re-do their rotation now that ace Jack Flaherty will be sidelined for a while with what manager Mike Shildt termed a "significant" oblique injury. Flaherty, who leads the majors with eight wins, left Monday night's start against the Los Angeles Dodgers with tightness in his left side. Shildt said St. Louis was still trying to determine the grade of Flaherty's injury, but added that it was going to take a while to heal.