Tanner Gardner is in his first season with the ThunderBolts and third as a professional in 2019. He signed with the Bolts on August 1, 2019. His pro career began in 2017, when he was a ninth round pick of the Texas Rangers in the Amateur Entry Draft. He spent parts of three seasons in the Rangers' organization, hitting .223 total with a .303 on-base percentage and rising as high as Class A Hickory. Tanner attended Texas Tech University, where he was named First Team All-Big 12 and Second Team All-American as a sophomore in 2016, when he hit .379 with 19 doubles and 35 RBIs. In three years of college, he batted .320 overall with 11 home runs, 79 RBIs and a .414 on-base percentage. He attended Centennial High School in Frisco, Texas.