Updated

Kasey Kahne and Kyle Larson hope to learn something about Chicagoland Speedway this weekend.

Kahne and Larson, regulars in the Sprint Cup series, are driving in Saturday night's Nationwide Series race on the last off weekend for NASCAR'S top series this season. No other notables from the Cup circuit are on hand, even though the Chase begins at Chicagoland on Sept. 14.

While Kahne has finished third twice in Sprint Cup races at Chicagoland, Larson, 21, is new to the big time. His best finish in a pair of Nationwide races here last year was 12th.

Though both hoped to glean information for September, it may have paid off already. Larson was fifth, Kahne seventh in the afternoon practice session for the Enjoyillinois.com 300.