ST. PETERSBURG — The Yankees are beatable, after all. Taylor Walls walked back his comments about the first-place Bombers on Sunday, but also backed up the premise with a career day. The Rays’ light-hitting infielder homered off Luis Severino and made two run-saving plays as the Yanks fell 4-2 at Tropicana Field. “There was no-shade throwing towards them,” Walls said after the Rays secured the split of the four-game series.