At Oakland-Alameda County Coliseum, Oakland Aâs first baseman Mark McGwire hits his 300th career home run off Tiger hurler Omar Olivares. The Aâs fail to outslug the Tigers, 10 â 8. Bobby Higginson and Jason Giambi each drive in five runs while Cecil Fielder also homers.
On June 25, 1996 At Oakland-Alameda County Coliseum, Oakland Aâs first baseman Mark McGwire hits his 300th career home run off Tiger hurler Omar Olivares. The Aâs fail to outslug the Tigers, 10 â 8. Bobby Higginson and Jason Giambi each drive in five runs while Cecil Fielder also homers.  Source Baseball Reference June 25