SPORTS ON THE AIR: Saturday, Sept. 21, and Sunday, Sept. 22
Saturday TELEVISION AUTO RACING: 5:25 a.m. — Formula 1 practice at Marina Bay, Singapore (ESPN2); 8:30 a.m. — FIM MotoGP: Emilia Romagna Grand Prix Spring at Santa Monica-Cella, Italy (TRUTV); 8:55 a.m. — Formula 1 qualifying at Marina Bay, Singapore ( …