JUPITER, Fla. — A reliever whose brilliance in October “revolutionized” how teams now finish games is leaving the mound just as his latest, lasting impact on baseball is beginning. Andrew Miller, a postseason MVP and 6-foot-7 lefty with a wicked slider who showed how the best reliever didn’t have to wait until the ninth to save a game, is retiring after a 16-year career, he told the Post-Dispatch. The 36-year-old pitcher spent the past three seasons with the Cardinals and the past three months as a measured, influential voice at the negotiating table representing the players’ union during barg…
