2016 is John Eierman's first season with the ThunderBolts and fourth professionally. He signed as a free agent on April 5, 2016. Eierman was originally selected in the third round of the 2011 Amateur Draft by the Tampa Bay Rays and spent three years playing for their rookie level affiliates. In 96 games overall, he batted .234 with 25 RBIs. After the 2013 season, he enrolled at the University of Missouri and walked on to their football team, where he was a backup quarterback and wide receiver. Eierman attended Warsaw High School in Warsaw, Missouri.