Welcome to SportsNation! On Thursday, we'll go inside the boxing ring when heavyweight boxer Cristobal Arreola stops by to chat. Arreola faces the 6-7 Vitali "Dr. Iron Fist" Klitschko (37-2, 36 KOs) in a 12-round bout from the Staples Center in Las Angeles on Saturday. The two fight for Klitschko's WBC heavyweight title and can be seen live starting at 10 p.m. ET/7 p.m. PT on HBO. Arreola (27-0, 24 KOs) landed his 15th straight knockout when he KO'd Jameel McCline (40-8, 23 KOs) in the fourth round for the NABF heavyweight title and the WBC Continental Americas heavyweight title. With a win against Klitschko, the California native has the chance to become the first heavyweight title holder of Mexican heritage.