Roush feels confident Ford engine woes over

To contend at Auto Club Speedway, Greg Biffle will have to come from the rear of the field due to an engine failure in opening practice on the 2-mile track. And car owner Jack Roush believes his driver has enough under the hood to do it. Roush said Saturday the engine failures suffered by Biffle and Ford stable mate Brad Keselowski appeared to be due to lost bearings, and the No. 16 car's strength in practice Saturday gave him confidence the issue would not rear its head again in Sunday's NASCAR Sprint Cup Series event. "Both of those problems are something we characterize as an infant mortality problem," Roush said after Biffle topped the first of Saturday's two practice sessions. "The fact that we've gotten the rest of the practice today, that we had one practice today and had no further problems, gives me confidence that we're going to be OK. We have adequate spare engines, and if we have more trouble in practice, we can make changes. But right now, I'm believing it's behind us." NASCAR.com