Series. The Vipers won the first game of the final series against the Gary SouthShore RailCats, 7–6, on a two-run, walk-off home run by Carlos Duncan. The teams traded wins in the first four games, forcing the series to a decisive fifth game. The RailCats won the game, and the championship, 5–1. Leaving the Northern League The playoff run would prove to be the team's last hurrah in the Northern League, as both the Vipers and Edmonton Cracker Cats announced that they were leaving the league after declining to post $1 million performance bonds as asked for by the Northern League. Both teams jumped to the California based Golden Baseball League. Golden Baseball League (2008–2010) The Vipers have been making headlines since moving to the GBL. They suggested that former National Hockey League star Theoren Fleury was considering playing for the Vipers. The former Calgary Flame took batting practice with the team, and threw out the first pitch at their home opener. He hit a single in his first at-bat. The next play he charged hard for second but was forced out. Then, the Vipers traded pitcher John Odom to the Laredo Broncos of the United Baseball League for ten bats. Odom was unable to enter Canada and was turned away at the Canadian border due to an unspecified criminal charge on his record. The Vipers intended to auction the bats off to raise funds for their Snakes and Batters charity fund, however they were instead sold to Ripley's Believe it or Not for $10,000. On September 5, 2008, the Vipers won the GBL North Division Championship outright by sweeping the Cracker-Cats 3 games to 0. On September 14, they lost the best-of-five GBL Championship Series to the Orange County Flyers 3 games to 2. In the 2009 season, the Vipers won both halves of the season, qualifying for the playoffs as the North Division regular season champions along with the second-place Edmonton Capitals. In the playoffs the Vipers won their first round series against the Capitals to win their second straight GBL North Division championship. The Vipers set a franchise attendance record in game four, with 4859 fans at the game. 2009 GBL Championship On September 12, 2009, the Vipers finally won their first professional baseball championship by defeating the Tucson Toros 3 games to 1 to capture the GBL Championship in front of over 2,000 fans at Foothills