Chiefs (Dallas Texans): Debuted in AFL on 9/10/1960, lost 21-20 to Los Angeles Chargers at Cotton Bowl (50,000 seats, Dallas). Wore red wool jerseys with white numerals, white wool pants with thin red stripe, white socks with red trim, red plastic helmets with white Texas outline/gold star, no face masks. Red-brick venue with white-painted single-tiered grandstand, patchy grass, urban streets/trees. Dolphins: Launched in AFL on 9/2/1966, lost 23-14 to Oakland Raiders at Orange Bowl (35,000 seats