He earned his M.F.A. in nonfiction writing from the University of Iowa, where he was an Arts Fellow and a Provost's Visiting Writer. He has published essays and stories in Slate, Gawker, TriQuarterly, The Rumpus, and The Kenyon Review, among others. His first book, Class A: Baseball in the Middle of Everywhere, an exploration of the world of low-level minor league baseball, was released by Pantheon in 2013. Class A was a Barnes and Noble Discover Great New Writers selection, and was named one of the best books of 2013 by Complex Magazine and The San Francisco Chronicle. Mann's second book, Lord Fear, will be released by Pantheon in 2015.