In 1995, he moved south to Mooresville, North Carolina and was named Rookie of the Year in the ARCA series the following year. Over his ARCA career, he won three times.
In 1997, he began running NASCAR in the Busch Series and the Craftsman Truck Series. He only tasted modest success but was signed on to run for Team SABCO in the Busch Series in 2000, posting two top-ten finishes and finishing 25th in points.
After that year, he decided to return to the ARCA series for more experience. On October 4, 2001, during the EasyCare 100 at Lowe's Motor Speedway, Alexander was battling Kerry Earnhardt for the lead when their cars touched, sending Earnhardt flipping upside-down through the infield while Alexander crashed into the outside retaining wall nearly head-on. Earnhardt made it out unscathed, but Alexander was taken to the hospital unconcious and showing no pulse. Within 25 minutes, he was pronounced dead. His death, the sixth stock car racing fatality in two years, convinced NASCAR to mandate the HANS device for all drivers.