Who won championships for Roger Penske?

Roger Penske has won numerous championships across various racing series, primarily in IndyCar and NASCAR. His teams have claimed multiple IndyCar Series championships with drivers such as Rick Mears, Al Unser Jr., and Will Power. In NASCAR, Penske Racing has secured championships with drivers like Brad Keselowski and Joey Logano. Penske's success in motorsports has made him a legendary figure in racing history.