Despite being a 2-to-1 underdog to UFC middleweight champion Anderson Silva , fellow UFC 162 headliner Chris Weidman has been a popular underdog pick in recent weeks. The title challenger has noticed too. Weidman (9-0 MMA, 5-0 UFC), a Division I All-American wrestler who’s undefeated since his move to MMA in 2009, meets Silva (33-4 MMA, 16-0 UFC) in the headliner of Saturday’s pay-per-view event at MGM Grand Garden Arena in Las Vegas. While Weidman’s a +200 underdog with most sportsbooks, fellow fighters and many industry insiders have predicted he’ll pull off the upset. Doing so against Silva, arguably the greatest fighter in UFC history, is no easy task. The 38-year-old champ, after all, is on an overall 17-fight win streak, owns UFC records for consecutive wins (16) and title defenses (10), and he’s knocked out four straight opponents