Amp’d Mobile AMA Supercross Lites Series, Texas Stadium, Irving, Texas Saturday, April 29, 6 p.m. (SPEED) Amp’d Mobile AMA Supercross Series, Qwest Field, Seattle, Wash., Sunday, April 30, 12:30 p.m. (CBS) AMA Superbike Championship presented by Parts Unlimited (Race 1), California Speedway, Fontana, Calif., Sunday, April 30, 5 p.m. (SPEED) AMA Superbike Championship presented by Parts Unlimited (Race 2), California Speedway, Fontana, Calif., Sunday, April 30, 6 p.m. (SPEED) Amp’d Mobile AMA Supercross Lites Series, Texas Stadium, Irving, Texas Tuesday, May 2, 12 p.m. (SPEED) Pro Honda Oils Supersport Championship presented by Shoei, California Speedway, Fontana, Calif., Tuesday, May 2, 1 p.m. (SPEED) AMA Superbike Championship presented by Parts Unlimited (Race 1), California Speedway, Fontana, Calif., Tuesday, May 2, 3 p.m. (SPEED) AMA Superbike Championship presented by Parts Unlimited (Race 2), California Speedway, Fontana, Calif., Tuesday, May 2, 4 p.m. (SPEED) Lockhart-Phillips USA Formula Extreme Series, California Speedway, Fontana, Calif., Tuesday, May 2, 5 p.m. (SPEED) Amp’d Mobile AMA Supercross Lites Series, Texas Stadium, Irving, Texas Tuesday, May 2, 11 p.m. (SPEED) Amp’d Mobile AMA Supercross, Reliant Stadium, Houston, Texas Wednesday, May 3, 2 p.m. (SPEED) Amp’d Mobile AMA Supercross Series, Texas Stadium, Irving, Texas Wednesday, May 3, 3 p.m. (SPEED) All Times Eastern. All times subject to change. Check local listings.