1988 – In a 5 – 4 triumph over Milwaukee, Oakland’s Mark McGwire hits a triple. His next and last major league triple will come in 1999 with the Cards.

This Day In Baseball

On June 20, 1988 – In a 5 – 4 triumph over Milwaukee, Oakland’s Mark McGwire hits a triple. His next and last major league triple will come in 1999 with the Cards.