This Day in Yankees History: Mattingly hits sixth grand slam of the '87 season - Pinstripe Alley
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Autographed New York Yankees Don Mattingly Fanatics Authentic 16 x 20 Swing Through The Zone Photograph
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This Day in Yankees History: Mattingly hits sixth grand slam of the '87 season - Pinstripe Alley
One Day Hopefully Back in Pinstripes: Ex-Captain Don Mattingly Melts New York Yankees Fans With a Special Appearance - EssentiallySports
Don Mattingly Baseball Stats by Baseball Almanac