High Quality Content by WIKIPEDIA articles! The Marysville Gold Sox is a summer collegiate wood-bat club based in Marysville, California, in the United States. The team is host of the Horizon Air Summer Series and plays its home games at Appeal-Democrat Park, formerly known as Bryant Field, adjacent to Ellis Lake, in Marysville. The team name was changed from Yuba-Sutter Gold Sox to Marysville Gold Sox in 2010 to more particularly identify the city in which the team is located.