Originally posted on 02/27/2013:
Yis, you can change your complete lineup weekly at yahoo. however, there is a deadline on the morning of qualifying [this week, Friday 5am EST] where you are locked in with a roster of 2 A's, 4 B's, and 4C's to chose 1 A, 2 B, and 2 C starters from among your lineup. after this deadline, then the only change you can make is who starts and who is on the bench. you have until 5 minutes before the scheduled start of the race(http://sports.yahoo.com/nascar/schedule) to pick your starters. only your starters in your lineup are deducted one start, the bench is not deducted a start. also, bench drivers are eligible for qualifying bonus points.