GREEN BAY, Wis. (WSAW) - Capital Credit Union Park opened its gates to the Northwoods League in 2019. Three years later, the team rebranded as the Green Bay Rockers, bringing a rock ’n’ roll identity to the ballpark. “Our owner Mark has a huge passion for music and sports, so combining baseball with the music theme was just a natural fit,” Rockers general manager and vice president John Fanta said.