Sports Classics 101, Softy, Dick Fain, and Jackson's masters class on sports history, continues today with an assignment from Softy featuring Mark McGwire's ridiculous 538 foot home run off Randy Johnson at The Kingdome against the Seattle Mariners back in 1997 while McGwire was with the Athletics. Watch that clip with Dave Niehaus on the call below, plus his 61st home run a year later while with the St. Louis Cardinals that tied Roger Maris' record, as called by Jack Buck.