ON THE TRACKS This weekend's events

NASCARNEXTEL CUPSamsung/RadioShack 500Fort Worth, Texas
Schedule: Today, qualifying (Speed Channel, 4:30 p.m.); Sunday, race (FOX, 1:30 p.m.)Track: Texas Motor Speedway (oval, 1.5 miles, 24 degrees banking in turns)Race distance: 501 miles, 334 lapsLast year: Greg Biffle led 219 of 334 laps while driving his backup car and won the Samsung/Radio Shack 500. Biffle crashed in practice and had to start at the back of the field.
BUSCH SERIESO'Reilly 300Fort Worth, Texas
Schedule: Saturday, race (FOX, 3 p.m.)Track: Texas Motor SpeedwayRace distance: 300 miles, 200 lapsLast year: Kasey Kahne got past rookie Reed Sorenson just before the final caution and held on the final two laps after the restart to win the O'Reilly 300.Next race: Pepsi 300, April 15, Lebanon, Tenn.
CHAMP CAR WORLD SERIESGrand Prix of Long BeachLong Beach, Calif.
Schedule: Today, qualifying, 5:30 p.m.; Saturday, qualifying, 5:25 p.m.; Sunday, race (NBC, 4 p.m.)Track: Streets of Long Beach (temporary road course, 1.968 miles, 11 turns)Race distance: 159.408 miles, 81 lapsLast year: Sebastien Bourdais moved past Paul Tracy on lap 38 and built a pair of leads of more than 5.5 seconds to give Newman/Haas Racing its fourth Long Beach victory, but first in 19 years. Bourdais was 8 when Mario Andretti won America's longest-running downtown street race in 1987.Next race: Grand Prix of Houston, May 13.
NHRASummitRacing.com NationalsLas Vegas
Schedule: Today, qualifying, 6 p.m.; Saturday, qualifying, 3 p.m. (ESPN2, 8 p.m., tape); Sunday, eliminations, 2 p.m. (ESPN2, 7 p.m., tape)Track: The Strip at Las Vegas Motor SpeedwayLast year: Larry Dixon gave team owner Don "The Snake" Prudhomme his 100th career victory, beating Doug Kalitta in the Top Fuel finals of the SummitRacing.com Nationals. Whit Bazemore and Dave Connolly also won their divisions to top the season standings.Next event: O'Reilly Thunder Valley Nationals, April 30, Bristol, Tenn.
Associated Press
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