![Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy](https://l450v.alamy.com/450v/2nggemd/chicago-cubs-sammy-sosa-follows-through-on-his-498th-career-homer-in-the-sixth-inning-friday-sept-20-2002-in-pittsburgh-off-pittsburgh-pirates-starter-salomon-torresap-photokeith-b-srakocic-2nggemd.jpg)
Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy
![Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy](https://l450v.alamy.com/450v/2ngge5d/chicago-cubs-sammy-sosa-does-his-traditional-hop-as-he-follows-his-499-home-run-in-the-first-inning-driving-in-bobby-hill-sunday-sept-29-2002-chicago-against-the-pittsburgh-pirates-ap-photostephen-j-carrera-2ngge5d.jpg)
Chicago Cubs' Sammy Sosa follows through on his ninth home run of the season in the fourth inning against the San Diego Padres Wednesday May 1, 2002, in San Diego. (AP Photo/Lenny
![Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy](https://l450v.alamy.com/450v/2ngje85/chicago-cubs-sammy-sosa-follows-through-on-a-sixth-inning-single-off-pittsburgh-pirates-starting-pitcher-todd-ritchie-tuesday-july-6-1999-in-pittsburgh-sosa-and-the-cubs-lost-to-ritchie-and-the-pirates-6-1-sosa-will-start-in-this-years-all-star-game-in-boston-mark-mcgwire-and-sosa-who-led-baseballs-resurgence-with-their-home-run-race-last-summer-will-be-starting-together-in-the-all-star-game-for-the-first-timeap-photogene-j-puskar-2ngje85.jpg)
Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy
![Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy](https://c8.alamy.com/comp/2PEYNH0/chicago-cubs-sammy-sosa-follows-through-on-a-solo-home-run-off-san-diego-padres-pitcher-ismael-valdez-during-the-fourth-inning-friday-may-14-2004-in-san-diego-ap-photodenis-poroy-2PEYNH0.jpg)
Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy
![Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy](https://c8.alamy.com/comp/2NGGRAW/chicago-cubs-sammy-sosa-follows-through-on-his-ninth-home-run-of-the-season-in-the-fourth-inning-against-the-san-diego-padres-wednesday-may-1-2002-in-san-diego-ap-photolenny-ignelzi-2NGGRAW.jpg)
Chicago Cubs' Sammy Sosa follows through on his ninth home run of the season in the fourth inning against the San Diego Padres Wednesday May 1, 2002, in San Diego. (AP Photo/Lenny
![Chicago Cubs' Sammy Sosa follows through on a solo home run off San Diego Padres pitcher Ismael Valdez during the fourth inning Friday, May 14, 2004, in San Diego. (AP Photo/Denis Poroy](https://c8.alamy.com/compes/2nfg6ax/chicago-cubs-sammy-sosa-follows-through-on-his-game-winning-two-run-homer-against-the-colorado-rockies-in-the-first-inning-sep-4-1995-chicago-ill-the-cubs-shut-out-the-rockies-2-0-sosa-is-tied-with-the-rockies-dante-bichnette-for-the-national-league-lead-in-homers-33-and-rbis-103-ap-photo-fred-jewell-2nfg6ax.jpg)
Chicago Cubs Sammy Sosa follows through on his game winning, two run homer against the Colorado Rockies in the first inning, Sep. 4, 1995, Chicago, Ill. The Cubs shut out the Rockies