I just checked out Pinnacle. In the case of the Pats game, the line is Buffalo +9.5 -115, New England +9.5 +107. When you adjust for -104/-104 type pricing, the real line is 8/8.5. Pinnacle set it at 9.5 to keep money off the NE tease. If you go to the teaser bet page, you'll be offered NE -3.5, an unfavorable tease. It happens often.