Thirteen Sprint Cup drivers are scheduled to take part in an open test today at Chicagoland Speedway.
The test follows a two-day Goodyear tire test with Dale Earnhardt Jr., Martin Truex Jr., Sam Hornish Jr. and JJ Yeley.
Those four drivers will be joined today by Kyle Larson, Greg Biffle, Denny Hamlin, Ryan Blaney, Austin Dillon, Kurt Busch, Clint Bowyer, Brad Keselowski and Justin Allgaier. Keselowski has won two of the last three Cup races at Chicagoland Speedway.