Simone Biles put herself in position to win a ninth national gymnastics title, stringing together four occasionally brilliant rotations to take a massive lead Friday night at the U.S. Championships. It also was more than three points clear of Skye Blakely in second at 57.050 and Kayla DiCello in third at 56.850. The seven-time Olympic medalist and six-time world champion began her night with her Yurchenko Double Pike vault, clasping her hands to her knees as somersaulted backward — twice — bef