Original: He was previously a driver for JR Motorsports from 2007 to 2009 in the Nationwide Series and for Phoenix Racing and Hendrick Motorsports in the Sprint Cup Series.
Simplified: He used to driver for JR Motorsports, a team owned by Dale Earnhardt, Jr. from 2007 to 2009 in the Nationwide series. He also used to drive for Phoenix Racing and Hendrick Motorsports in the Sprint Cup Series.