DraftKings MMA: UFC Vegas 31 Preview Written by This article is part of our DraftKings MMA series. UFC Vegas 31 was supposed to be headlined by Max Holloway and Yair Rodriguez before the former was forced to withdraw due to injury. It's a bummer that we won't get to see that fight for a while, but this new main event has all sorts of potential. If you're hoping to turn the event into an opportunity to build your DFS bankroll, DraftKings.com has you covered with a full slate of contests, including a $350k MMA Throwdown with $100k to first place. Players get a $50,000 budget to select six fighters, and the scoring is distributed as follows: