The sports books opened Stanford vs. Rice with the Cardinal favored by 38 points and has since moved to Stanford by 30 1⁄2. The change in the line reflects that early betters have laid more of their money down on the Rice Owls to cover the spread. That’s a huge amount of movement on a betting line! 7 1⁄2 points!
Vegas lines and odds aren't meant to be predictive. They are made to entice betting in equal portions on each side of the spread.