ST. LOUIS, UNITED STATES:  Mark McGwire of the St. Louis Cardinals follows through on his swing after hitting his 61st homerun against Chicago Cub's Mike Morgan at Busch Stadium 07 September in St. Louis, MI. McGwire tied the record set by Roger Maris in 1961 with 61 homeruns. (ELECTRONIC IMAGE)  AFP PHOTO   Jeff HAYNES (Photo credit should read JEFF HAYNES/AFP via Getty Images)