The San Francisco 49ers havent played their offensive starters much during the preseason. Brock Malik Sealy Jersey Purdy made his debut on Sunday night, completing 2-of-6 attempts for 11 yards and a 42.4 pa ser rating, while failing to lead his team to any points.However, backup Josh Dobbs entered the game in the second quarter and provided a real spark for the 49ers, as they scored on all...