A significant milestone for NASCAR begins this weekend, with streaming serving as the primary delivery method for Cup Series races. Prime Video will carry the next five races, which will run through late June.

Sprint announced on Tuesday that it will not extend its sponsorship of the NASCAR Sprint Cup Series beyond 2016. "Significant changes within Sprint and the highly competitive business environment it is in led to a decision not to extend its Cup Series entitlement position following the 2016 season," the company...