HKFC: School of Hard Knocks 12 was an MMA event held on June 17, 2011 in Calgary, Alberta, Canada. This event was the location of the second professional MMA bout of Ronda Rousey.
Overview：HKFC: School of Hard Knocks 12 was an MMA event held on June 17, 2011 in Calgary, Alberta, Canada. This event was the location of the second professional MMA bout of Ronda Rousey.
