Chael Sonnen has come a long way since making his UFC debut at UFC 55, a fight he lost to Renato Sobral via a second round triangle choke submission. That fight took place in front of 8,000 fans at Connecticut’s Mohegan Sun Casino. 

On Saturday, Sonnen will face Michael Bisping at Chicago’s United Center; a fight that the UFC has announced via press release is officially sold out. The press release did not state how many tickets were sold for the UFC on FOX 2 event, but capacity for the arena is in the range of 20,000.

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Sonnen recently reminisced about his early days in MMA with MMA30TV, recalling how for that first fight, he was given a check for $100. Sonnen admits that check remains uncashed and on his refrigerator.

Further Reading: UFC on Fox 2 Media Call: Chael Sonnen says Anderson Silva is not going to fight again in the UFC