1999 Mark McGwire 500th Home Run Ticket Stub SHARE ON: russ — October 3, 2019 Tags: 1999500th Home Run90'sAug 5Baseballbusch stadiumMark McGwireMLBSan Diego PadresSt. Louis CardinalsSt. Louis MO 1999 Mark McGwire 500th Home Run Ticket Stub St. Louis Cardinals History: Mark McGwire Hits 500th Career Homer (calltothepen.com) Click to view all 500 Homer Club Ticket Stubs