Mark Mcgwire by Don Smith
File:Pine-tar bat.jpg - Wikipedia
File:Fredbird head.jpg - Wikipedia
2014 Hall of Fame profile: Mark McGwire
File:Mark McGwire follow-thru Piazza catching-53.jpg - Wikipedia
Michael McGuire: Santa Rosa Strong
Mark McGwire, McGwire is a former Major League Baseball pla…
File:Mark McGwire follow-thru vs Giants-55.jpg - Wikipedia
File:Robert Fick (cropped).jpg - Wikipedia
File:McGwire and Piazza at first-67 (37624177991).jpg - Wikimedia
File:Mark McGwire on June 29, 2011.jpg - Wikipedia
Mark McGwire says he didn't need PEDs to hit 70 home runs - ESPN
File:Youkilis in the field.jpg - Wikipedia