| | | Monday, December 17th, 2012 | | Promoted C Reese Bowen to Double A Rock River. | | Received C Luis León from Double A Rock River. | | Drafted LF Jean Pierre in the 2012 first-year player draft (Round 6, Pick 13, 133rd overall pick). | | Drafted 3B Shintaro Kichida in the 2012 first-year player draft (Round 7, Pick 13, 157th overall pick). | | Drafted CF Ron Howse in the 2012 first-year player draft (Round 8, Pick 13, 181st overall pick). | | Drafted 2B Ethan Lewin in the 2012 first-year player draft (Round 9, Pick 13, 205th overall pick). | | Drafted CF Kelly Simmons in the 2012 first-year player draft (Round 10, Pick 13, 229th overall pick). | | Drafted LF Nobuhito Koyama in the 2012 first-year player draft (Round 11, Pick 13, 253rd overall pick). | | Drafted C Bob Genge in the 2012 first-year player draft (Round 12, Pick 13, 277th overall pick). | | Released SP Richard Hickey. | | Released C Mike Nance. | | Released MR Yves Guedon. | | Released MR Tommi Karvinen. | | Released MR Sam Williams. | | Released MR Brian McNeal. | | Released MR Manuelo Fajardo. |
| Saturday, October 20th, 2012 | | Signed manager Russ Bailey. |
| Friday, October 19th, 2012 | | Manager Ron Goyer leaves the team, his contract was not renewed. | | Hitting Coach Ralph Powell leaves the team, his contract was not renewed. |
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