Murphy ran two races (at the
Miami street course and
Road Atlanta) in Konrad Motorsports' No. 25
Saleen S7R in the 2002
American Le Mans Series season, teaming up with Charles Slater in both races as well as
Jean-François Yvon at Road Atlanta. He also drove for Konrad in one Grand-Am race at the
Daytona road course that year in their No. 31, sharing the car with
Franz Konrad. Murphy made his first start in the
NASCAR Craftsman Truck Series at
Martinsville Speedway in late
2004 driving for
Green Light Racing in the No. 07
Chevrolet Silverado. He had a solid debut, qualifying 19th and finishing 22nd. The deal gave Murphy an opportunity to race for the remaining three races of the season for the team (two races in the No. 07 and one in the No. 08). At the next race at
Phoenix, Murphy finished 24th, but also led two laps. At
Homestead-Miami, Murphy led ten laps due to pit strategy before his engine expired. Murphy ran a total of 14 races in 2005-2006, once again all for Green Light Racing. His best finish was a 13th at
Atlanta. He earned his first career lead-lap finish at
Fontana that year. Also, at Atlanta, Murphy led his only lap on the season. However, sponsorship did not materialize and after the race at
Michigan, Green Light found other drivers to drive the truck for the rest of the year. In February 2007, Murphy competed in the 41st Annual World Series of Asphalt Stock Car Racing at
New Smyrna Speedway in
New Smyrna Beach, Florida. Murphy was scheduled to race in three races that took place on consecutive nights. Murphy qualified on the pole for the Thursday night race, but rain and thunder caused that night's activities to be canceled. On Friday night, Murphy qualified on the outside pole, but did not start the race due to a mechanical problem with his car. Murphy qualified on the pole for the second time on Saturday, but due to a problem he was forced to start in the rear of the pack. After a long week of frustration and disappointment, the team's hard work finally paid off when Murphy crossed the finish line in fifth place. Murphy spent 2007 racing with SS Racing and competing for the ASA Super Late Model Challenge Series division title. He was awarded the ASA-Late Model Series Pat Burdow Memorial Rookie of the Year Title on Saturday at
Five Flags Speedway. Murphy qualified with the fastest time for the fourth time and set a new ASALMS track record for the three times during the season (all divisions). Returning to the No. 07 truck of the renamed SS-Green Light Racing in
2008, Murphy earned his first and only top-ten in the Truck Series at
Mansfield, which was also his best finish of the season. He drove in five other races after that:
Milwaukee,
IRP,
Bristol,
Las Vegas, and
Talladega. Murphy made his
Nationwide Series debut in
2009, running three races (
Iowa,
Watkins Glen, and
Bristol) in the No. 81 Dodge for
MacDonald Motorsports. His best finish was a 20th at Bristol. He continued to compete in the Truck Series for SSGLR, this year in the No. 08 in all his starts (due to
Chad McCumbee driving the No. 07 full-time in 2009). After running three races in that truck, he drove the No. 21
Dodge for
GunBroker Racing at Talladega that year, substituting for
Nick Tucker, the normal driver of that truck, who had never raced on a
restrictor plate track before and was not cleared to race that weekend. Murphy returned to SS-Green Light again in
2010, driving the No. 07 truck in the season-opener at
Daytona. The team indicated that they wanted him to run the full season if sponsorship could be found, but it was not. The team ended up having multiple drivers in the No. 07 that year, and that race, which Murphy finished 13th in, ended up being his last start in NASCAR. ==Personal life==