May 14—BOSTON — Cardinals catcher- turned-DH-soon-to-be-turned-catcher- again Willson Contreras has demonstrated a knack for getting under the skin and inside the heads of opposing fans and players. His spell has a particularly potent effect on pitchers. Earlier this season Contreras’ “mind games” with Madison Bumgarner prompted a minor meltdown inning from the battled-tested left-hander with a…