Tony Stewart opened Speedweeks with a weighty - and heated - issue. Joe Gibbs Racing teammates Denny Hamlin and Kyle Busch also had to return to the scale after getting in their cars. NASCAR eventually flagged Stewart, ordering him back to the garage to get weighed. Stewart refused to answer questions about what happened on the track and in the hauler, but was overheard telling teammate Kevin Harvick's crew that he was called in because he didn't weigh in and didn't heed the black flag. More...