The Joliet Slammers' Erik Lis (25) is congratulated by teammates after hitting a two-run homer against the Windy City ThunderBolts during the first inning of their Frontier League baseball game at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media

The Windy City ThunderBolts's Ryan Cuneo connects with a pitch during the second inning of their Frontier League baseball game against the Joliet Slammers at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media

The Windy City ThunderBolts's Dustin Williams pitches agains the Joliet Slammers during their Frontier League baseball game at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media

Slammers pitcher Jacob Sanchez. | Brett Roseman~Sun-Times Media

The Windy City ThunderBolts's Michael Torres beats the tag by Joliet Slammers' Hector Pellot as he steals second base during the first inning of their Frontier League baseball game at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media

The Joliet Slammers' Josh Lyon gets on base with a hit against the Windy City ThunderBolts during the second inning of their Frontier League baseball game at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media

The Joliet Slammers' David Christensen tips the ball foul against the Windy City ThunderBolts during the first inning of their Frontier League baseball game at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media

The Joliet Slammers' Josh Lyon sprints to third base during the second inning of their Frontier League baseball game against the Windy City ThunderBolts at Silver Cross Field in Joliet Monday, July 30, 2012. | Brett Roseman~Sun-Times Media