Knox Challenger 2019 Knoxville Challenger 127 Photos 2019 Sponsor Reception 82 Photos 2018 Knoxville Challenger 17 Photos 2018 Sponsor Reception 43 Photos 2017 Knoxville Challenger 180 Photos 2017 Sponsor Reception 31 Photos 2016 Knoxville Challenger 146 Photos 2016 Sponsor Reception 52 Photos 2015 Knoxville Challenger 31 Photos 2015 Sponsor Reception 73 Photos 2014 Knoxville Challenger 354 Photos 2014 Sponsor Reception 161 Photos