The Blue Devils are the favorites at 3-1, followed by the Spartans andKentucky, who are each at 6-1 at William Hill's Nevada sportsbooks.Arizona, at 8-1, is the only other team with single-digit odds.
Duke and Michigan State are 4-1 co-favorites at the Westgate SuperBook.
The Spartans opened at 20-1 to win the national title and have been supported heavily throughout the offseason. More bets have been placed and more money has been wagered on Michigan State to win the national championship than on any other team at William Hill, CG Technology and Caesars Palace sportsbooks.
The Spartans have the most bets at the Westgate, but Duke has attracted more money.
No. 4 Kansasis 12-1. No. 7 Wichita State, which returns all five starters from last year's NCAA tournament team, is 20-1, followed by defending national champion North Carolina,at 22-1.
Missouri, which landed No. 2 overall recruit and NBA prospectMichael Porter Jr. in April, saw its odds improve from 300-1 to 25-1 at William Hill.
The college basketball season tips off Friday.
Bridges ready for big sophomore year at MSU
Miles Bridges is back for Michigan State and looks to build off a strong freshman season in which he stood out in Spartans' history.