The primary reason that we use the current structure is because traditionally Saturday is our long day. Often times we race till 6:30 or later on Saturday. In contrast we generally finish up on Sunday around 5:30 and with this seasons revised Sunday schedule hopefully we will be able to shave a little more time off of that. That will get everyone on the road home sooner and save money in the overtime hours that the tracks charge. It just makes more sense to run long on Saturday than on Sunday since most members have work or school on Mondays.