Driver Johnny Sauter and Phoenix Racing have "amicably" parted ways five races into the NASCAR Nationwide Series.
Sauter finished 21st in Saturday's rain-shortened Sharpie Mini 300 at Bristol after having had a best finish of 13th in the season opener at Daytona.
Jon Wolfe and Newt Moore had both been released as crew chief from the No. 1 Chevrolet team this year.
Sauter drove in the Cup Series for Haas CNC Racing in 2007, but opened 2008 without a ride in NASCAR's top series.