I would guess that percentage against the spread will stay close to that 70% number, with one caveat. As the board's resident degenerate gambler, I have used a similar model for NFL games for years. West coast teams traveling 2+ time zones AND playing the in the 1 o'clock games fail to cover as a favorite about 65% of the time. That's using about 20 years of data. East coast teams traveling west don't seem to have the same results, they are closer to 50%. Something about the body being able to reset its clock easier with the added time, or some sort of physiological mish mash that I didn't pay attention to in biology class.