This Day In Baseball Hall of Fame catcher Gabby Hartnett dies on his 72nd birthday December 20, 1972September 24, 2019 This Day In Baseball On December 20, 1972, Hall of Fame catcher Gabby Hartnett dies on his 72nd birthday. Hartnett batted .297 over a 20-year career with the Chicago Cubs and New York Giants. Hartnett gained election to the Hall of Fame in 1955…