Draymond Green, who had 12 points and nine rebounds in the final, was named the most outstanding player of the tournament. The Spartans (27-7) claimed their first tournament title since 2000 in a dramatic game that featured 16 lead changes.
Jared Sullinger scored 18 points and Deshaun Thomas and William Buford added 11 each for the Buckeyes (27-7), who were denied a third consecutive title.
The teams shared the regular-season title with Michigan.
Wood transferred to Michigan State after graduating from Valparaiso last year with eligibility remaining. He received a waiver from the NCAA to play immediately because he entered graduate school.
ATLANTIC 10 CHAMPIONSHIP
ST. BONAVENTURE 67, XAVIER 56
In Atlantic City, N.J., Conference Player of the Year Andrew Nicholson had 26 points,14 rebounds and eight blocked shots and St. Bonaventure won its first Atlantic 10 title by beating Xavier.
Da’ Quan Cook and Charlon Kloff added nine points apiece for the fourth-seeded Bonnies (20-11), who will be returning to the NCAA Tournament for the first time since 2000.
Tu Holloway had 17 points for Xavier (21-12).