Sam Hornish Jr. will replace AJ Allmendinger in Penske Racing's No. 22 Sprint Cup Series car this weekend at New Hampshire Motor Speedway, the team said in a statement on Monday morning.
Hornish was a last-minute substitute for Allmendinger in Saturday's Daytona race after Allmendinger was temporarily suspended from NASCAR for failing a drug test.
In its statement, Penske said it was "continuing to work with NASCAR to follow its process and procedures."
Since Hornish is running for a championship in the Nationwide Series this year, it's unclear whether Penske will use him on a weekly basis in the No. 22 car.
Allmendinger has until Tuesday to request his 'B' sample be tested. When drivers are drug-tested, their urine is divided into two cups – an 'A' and 'B' sample. NASCAR said Allmendinger's 'A' sample came back positive for an unspecified drug, which is why it suspended him for the Daytona race.
If the 'B' sample also is positive, Allmendinger will be indefinitely suspended from NASCAR.