Seong Chan Hong @ Challenger Columbus

Denis Kudla Jordan Thompson Ryan Harrison Ji Sung Nam Gijs Brouwer Ernesto Escobedo Jurij Rodionov Donald Young Kyle Edmund Michael Mmoh Zhe Li Takanyi Garanganga Benjamin Becker Yasutaka Uchiyama Bjorn Fratangelo Uladzimir Ignatik Duckhee Lee Vasek Pospisil Christian Harrison Gonzales Austin Ramkumar Ramanathan Laurynas Grigelis Yunseong Chung Prajnesh Gunneswaran Norbert Gombos Philip Bester Jelle Sels Bernard Tomic Michael Geerts Illya Marchenko Christopher O'Connell Daniel Elahi Galan Ricardo Ojeda Lara Gastao Elias Juan Pablo Ficovich Goncalo Oliveira Antoine Escoffier Go Soeda Jack Sock Guido Andreozzi James Duckworth Makoto Ochi Yusuke Takahashi Fabien Reboul Nino Serdarusic Andrea Collarini Seong Chan Hong Yannick Mertens Gianluca Mager Federico Coria