The 2003 Samsung/RadioShack 500 was the seventh stock car race of the 2003 NASCAR Winston Cup Series season and the seventh iteration of the event. The race was held on Sunday, March 30, 2003, before a crowd of 215,000 in Fort Worth, Texas at Texas Motor Speedway, a 1.5 miles (2.4 km) permanent tri-oval shaped racetrack. The race took the scheduled 334 laps to complete. Penske Racing driver Ryan Newman would make a gamble near the end of the race, pitting for only two tires on the final round of pit stops. He would be able to pass and defend Dale Earnhardt, Inc. driver Dale Earnhardt Jr. to win his second career NASCAR Winston Cup Series win and his first win of the season. To fill out the podium, Jeff Gordon of Hendrick Motorsports would finish third.