1928 Event John McGraw backs NL President John Heydler's designated hitter idea 1928 Event NL President John Heydler proposes designated hitter for pitchers 1927 Event NL President John Heydler rules Rogers Hornsby can't hold stock in the Cardinals and play for the Giants 1919 Event NL President John Heydler dismisses charges that Hal Chase bet against his team and threw games in collusion with gamblers