NEW YORK — Last week, an unfamiliar sight materialized behind second base at Yankee Stadium. The New York Yankees’ newest superstar, Juan Soto, knelt there during batting practice, waiting to frame Jahmai Jones’s throw from the outfield wall. Outfielder Alex Verdugo stood behind Soto, crouched like an umpire, every time Jones shagged a flyball and fired Soto’s way.