They’ve earned our cheers—they carry our colors as North Bay Derby. In each jam, each of the two opposing teams fields one “jammer” and four “blockers,” making for 10 on the oval track. When the whistle blows, the jammer’s objective is to get through the defending blockers. As a defending blocker, my objective is to not let the opposing jammer through. Their next home game is a double header Nov. 1, at our home venue, the Sonoma County Fairgrounds.