Some major rules differences from the NFL include:♦ No kickoffs or extra point attempts. Teams must attempt two-point conversions. Possessions will start at the 25-yard line. There also are no onside kicks; instead, a team can attempt a play from scrimmage from their own 28-yard line and need to gain at least 12 yards.♦ No television timeouts.♦ A 35-second play clock (the NFL employs a 40-second play clock).♦ Coaches get two challenges; no challenges, however, in final two minutes of each half.♦ Overtime will be one possession for each team from their opponent's 10-yard line. No field goal attempts can be made.
Atlanta at Orlando, 8 p.m. (CBS) San Diego at San Antonio, 8 p.m. (CBS)Memphis at Birmingham, 4 p.m. (CBS Sports Network) Salt Lake at Arizona, 8 p.m. (NFL Network)