to Ford. During the offseason, Allmendinger replaced Reed Sorenson in the team's famous No. 43 car. He collected two top-fives, eight top-10s, and a pole position in 2010, and finished 19th in the final standings. After finishing 11th in the 2011 Daytona 500, Allmendinger started the season 10th in points driving the No. 43 Ford sponsored by Best Buy. Allmendinger continued to have a career-best year in 2011 with 10 top-10 finishes and an average finish of 16th. He finished the 2011 regular season contending for a wild card spot in the Chase for the Sprint Cup but came up just short. Three races before setting the field for the Chase, RPM put former Roush Fenway Racing crew chief Greg Erwin on the pit box starting at the 2011 Brickyard 400. Allmendinger and Erwin recorded six top-10 finishes after their pairing. Allmendinger finished the 2011 season a career-best 15th in the points. Allmendinger also announced that he would have a partnership stake in Mike Shank's IndyCar team MSR Indy. 2012: Team Penske, suspension At the end of the 2011 season, Allmendinger left Richard Petty Motorsports when the driving spot for Penske Racing's No. 22 Shell/Pennzoil-sponsored Dodge became open after the parting ways of Kurt Busch and Penske. Before his suspension, his best finish was a second at Martinsville Speedway. After failing a random drug test on July 7, 2012, Allmendinger was suspended from participation in the Coke Zero 400. Steve O'Donnell, NASCAR's senior vice president for racing operations, said that Allmendinger had up to 72 hours to request a B test sample. The next day, Penske said before the Honda Indy Toronto race that Allmendinger's B sample would be tested on Monday or Tuesday. Allmendinger requested a B sample test on July 9. On July 11, 2012, Allmendinger's camp said a stimulant caused the positive drug test. The B sample test had not yet been scheduled at that time. On July 24, it was announced by NASCAR that Allmendinger was suspended indefinitely after the B sample tested positive for a banned stimulant, which was revealed to be amphetamine. He chose to participate in the Road to Recovery program. On August 1, he was released from his contract by Penske Racing. Allmendinger was replaced in the No. 22 by Sam Hornish Jr.; he later stated that the cause of the positive test was Adderall that he had unknowingly taken, being told