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With his recent suspension for steroids, Ken Shamrock was forced off the upcoming March Badness boxing/MMA event scheduled for March 21.

Shamrock was scheduled to compete against Bobby Lashley as the MMA main event on the Roy Jones Jr.-promoted fight card.

Jason Guida, brother of UFC lightweight Clay Guida, has agreed to replace Shamrock and fight Lashley. Ariel Helwani of Versus.com was the first to report the news earlier today.

Guida, who currently holds a professional record of 17-19, has lost his last three fights and is probably most widely known for his ever-so-brief stint on The Ultimate Fighter: Season 8.

Guida failed to make weight and was removed from the TUF show before even being allowed to fight a single time.