Vegas has had a hard time with the Wisconsin vs. Minnesota since the betting line opened. Since the Golden Gophers were the home team, Vegas went with a safe bet and had them open as the 3.5 favorites. Yet, betters loved that line and began to unload on that line to the point where it moved towards Wisconsin.
Yesterday, the Golden Gophers were 1.5 favorites, and today, it's flipped; the Badgers are now the favored team, even though they are the road team. The money just continues to turn up Wisconsin, so Vegas needs to move the line so it's not as favorable for money to be put down on the Badgers.