I've mentioned this on many sites for years: That 3 PM Pacific Time Sunday afternoon line that shows up on sites like Vegas Insider is a mostly worthless number. It is merely the Las Vegas "send" recommendation from the top sports consultant service in the state. That's where this -2.5 comes from, and has been spotlighted on several Canes sites.
None of the big reputable spots used that number and were pounded all the way up to -7. They know better. They knew better years and years ago, when my friends and I started hanging out at each sportsbook, desperately hoping they would merely throw up the "send" number and let us pound it. None cooperated. They worry about football and don't want to go first. Fortunately, Harrah's did use that "send" number for years on basketball and other sports. That was glorious. You didn't have to pick a high percentage of winners on truly balanced spreads. You merely had to identify the glaring mistakes and take max advantage. So many opportunities like that used to be available to locals, before the corporate mergers that ruined the terrain. Instead of every joint with an independent line and independent opportunity for a guy behind the counter to make a mistake, now there are satellite books with painted numbers. I feel sorry for the young guys who venture to that town these days, compared to how my friends and I found it 30+ years ago. Not many cheapies anymore.
Last I heard, only 1 or 2 small online outfits hang that opening "send" number, and for tiny limits.
Instead of touting that fragile -2.5 "send' number it's more valid to wait 3 hours for the prime time spots to take action. For decades the rule of thumb is that college football action starts to take shape at 6 PM Las Vegas time, or 9 PM Eastern.
This spread is based on power ratings gap and home field adjustment. Nobody cares about noon kickoff or similar garbage. The sportsbooks don't have time or need to make subjective evaluations on game after game, as opposed to using base power ratings and 11/10 edge and allowing them to generate a profit over tens of thousands of repetitions all year long.