NFL's Antonio Williams to invest in NASCAR driver Joe Graf Jr. Posted Feb 10, 2021 Joe Graf Jr.’s NASCAR career is getting an assist from a fellow aspiring professional athlete. Antonio Williams, who just completed his rookie season with the NFL’s Buffalo Bills, has become an investor in the racing career of the 22-year-old Xfinity Series driver. Williams has committed himself to helping Graf expand his current relationships in the sport. (Motorsport)