Mattingly's grand slam
Yankees @ Blue JaysJune 29, 1987 | 00:01:11
6/29/87: Don Mattingly blasts a grand slam off John Cerutti, knocking him out of the game and doubling the Yankees' run total
6/29/87: Don Mattingly blasts a grand slam off John Cerutti, knocking him out of the game and doubling the Yankees' run total