Adreian Payne added a career-high 16 points, Keith Appling had 12 points and six assists and Brandon Wood had 10 points for the top-seeded Spartans (25-7). The Spartans shot 58 percent from the field.
Josh Oglesby scored 20 points for Iowa (17-16). Zach McCabe and Roy Devyn Marble added 13 points each for the Hawkeyes, who defeated Illinois on Thursday. Iowa entered Friday's game having won four of six games, including wins against Indiana and Wisconsin.