Jon Wertheim discusses the future of the UFC and his latest book, "Blood in the Cage: Mixed Martial Arts, Pat Miletich, and the Furious Rise of the UFC," at Gelf Magazine's Varsity Letters reading series. Gelf Magazine presents Varsity Letters, a free, sports centric reading series every month at the Happy Ending Lounge in New York. February 5's installment featured David Harris, Will Leitch, and Jon Wertheim. Harris is the biographer of legendary 49ers coach Bill Walsh. Leitch shared all-new material from the paperback edition of his manifesto on behalf of the modern fan. And Wertheim profiled a mixed-martial arts legend and the meteoric rise of his sport. You can order copies of their books through Gelf's website; for interviews and more, visit www.gelfmagazine.com