Martinez's grand slam
D-backs @ CardinalsJuly 27, 2017 | 00:00:29
J.D. Martinez powers an opposite-field grand slam to right, giving the D-backs a 4-0 lead in the 4th inning #PapaSlam
J.D. Martinez powers an opposite-field grand slam to right, giving the D-backs a 4-0 lead in the 4th inning #PapaSlam