NASCAR at Las Vegas: Key info, links, results for race weekend

The NASCAR Cup Series and Xfinity Series continue the playoff action this weekend out in the desert, each kicking off their respective Round of 8 at Las Vegas Motor Speedway. Bookmark this page and come back often for your race-week essentials -- from links to qualifying order, average practice speeds, results and more. RELATED: Full weekend schedule | TV listings

NASCAR Cup Series

Race day: Sunday at 5:30 p.m. ET on USA Network. The categories listed below will be filled out with links as the information becomes available. Tires: Ten sets for the weekend (eight new race sets, one set transferred from qualifying and one set for practice).  Entry List Qualifying Order Practice Results Practice Lap Averages Practice Lap Times Qualifying Results Pit Stalls Stage 1 Results Stage 2 Results Race Results

NASCAR Xfinity Series

Race day: Saturday at 7:30 p.m. ET on The CW. The categories listed below will be filled out with links as the information becomes available. Tires: Six sets for the weekend (four new race sets, one set transferred from qualifying and one set for practice).  Entry List Qualifying Order Practice Results Practice Lap Averages Practice Lap Times Qualifying Results Pit Stalls Stage 1 Results Stage 2 Results Race Results