Mark Blinch/Getty Images Jazz Chisholm Jr. will be moving back to his customary spot, second base, according to New York Yankees manager Aaron Boone. The Jazz Chisholm Jr. experiment at third base is over. New York Yankees manager Aaron Boone announced the position switch for Chisholm from third to his natural second base ahead of New York’s key series against the Seattle Mariners, which starts Tuesday. Chisholm has played third base exclusively since coming off the injured list last month but