pinnacle does not like lines between -1.5 and -2.5 or -7.5 and -8.5. because of cetain types of teasers.
if a team is favored between 1.5 and 2.5, you can tease up the dog to include the numbers of 3 and 7. for example, if jac is -1.5, you can tease min to +7.5.
on the other side, if a team is favored by 7.5 to 8.5 you can tease down the fav to go through 3 and 7 again. for example if the bears of -7.5, u can tease them to -1.5.
pinnacle does not like this. these teasers are called Wong Teasers.
so pinnacle will make the line -1 or -9. they try to stay away from those other numbers.