http://mmajunkie.com/news/22231/ufc...mately-42000-seats-ranging-from-50-to-800.mma The UFC is aiming for a new attendance record in April when it visits the Rogers Centre in Toronto for UFC 129: St. Pierre vs. Shields. Beginning February 10th, 42,000 tickets will be available for the event ranging in price from $50 in the stands to as much as $800 for floor seats. The main event pits reigning UFC Welterweight Champion of the World Georges St. Pierre, from St. Isadore, Quebec, against San Francisco native Jake Sheilds. Two co-main events feature UFC Featherweight Champion of the World Jose Aldo defending his title against London, Ontario native Mark Hominick, and former UFC Heavyweight and Light Heavyweight Champion of the World Randy Couture facing former Light Heavyweight Champion Lyoto Machida. The UFC's most-attended event ever was December's UFC 124: St. Pierre vs. Koscheck in Montreal (23,152) while the most-attended MMA event in North America was K-1 Dynamite!! USA in June of 2007 (42,757). The Rogers Centre (formerly SkyDome) attendance record is approximately 72,000, dating back to June of 1995, for the Billy Graham Mission Ontario Youth Rally. The maximum capacity of the Rogers Centre for a wrestling or MMA event is roughly 69,000.
I highly doubt they will even see that amount but it could be one if not the highest selling audience..
100% it will be the UFC's biggest crowd. I don't know if they will sell out but they will exceed 25,000 with ease.