Outfielder Bryan Burke signed with the Vipers in 2011 and set his career best in batting average hitting .302 last season.
Shortstop Louis Templeton spent his rookie season in Calgary last summer hitting .289 with 5 home runs in 2011.
Right handed pitcher Stephen Whalen pitched for four different teams in three season, the latest being in Calgary in 2011. In 14 games at Calgary Whalen went 7-5 with a 5.13 ERA.
The T-Bolts also signed right handed pitcher Bobby O'Neil after O'Neil was release from rookie ball with the Twins in 2011.
The ThunderBolts play their home games at Standard Bank Stadium in Crestwood Illinois and open their 2012 baseball season on May 14th 2012.