Must be from USA or Canada.

Bonus Points for: Marathon Runners and Olympic Athletes

Specifically: Name, Sport, Awards Won, and Where I can find more information about them / their addiction

The one that comes to mind is:

John Lucas, USA, basketball. Played in the NBA and was considered a standout point guard until his habits destroyed his career. Later in life, he underwent successful rehab and managed to become an NBA head coach.

http://en.wikipedia.org/wiki/John_Lucas_II

I love you Joe Namath!

Uhhhh....

Name: Joe Namath
Sport: Football
Awards Won: Lots
More Information: Simpsons reruns.

Theoren Fleury, Canada, hockey. Alcoholism became well-documented later in his career; many traced it to his trying to cope with the sexual abuse he suffered under one of his junior coaches.

One story here, though I'm sure there are plenty:
http://www.cbc.ca/sports/story/2004/11/01/theo_fleury041101.html

I believe there was also an American basketball player named Vin Baker who suffered from alcoholism, but am less sure on that one.

Name: John Daly
Sport: Golf
Had been sober for a bit, but was recently arrested for being drun k and disorderly outside a Hooters.

Kerry Collins
QB for the Tennessee Titans

went into rehab in '97 but has seemingly been sober since then.

Chris Mullin

my all-time favorite athlete

This is great, guys. If you can think of any others, please throw them into the mix.

This is to collect starting points for research for something important...