I dont know that anyone is locked in. There will be two to 5 practices of 8 laps, qualifying for over 40 sprnts, 3 to 6 heats races of 8 laps, two 20 laps qualifiers and a 25 lap features. Thats a full day of racing at Bristol. Thats a possible of close to 200 laps of racing. I dont think anyone is locked in! Suellen