IOWA CITY, Iowa -- Megan Gustafson had 27 points and 11 rebounds for her NCAA-leading 14th double-double, sophomore Kathleen Doyle set career-highs with 23 points and nine assists, and No. 23 Iowa beat 21st-ranked Michigan 82-72 on Sunday.

Iowa (14-1, 2-0 Big Ten) is off to its best start since the 1995-96 season when the Hawkeyes opened at 20-1.

Michigan went on a 7-0 run to pull within 64-62 but Iowa answered with an 8-0 spurt, capped by Gustafson's layup with 1:21 to go. The Hawkeyes' lead didn't dip below nine points the rest of the way.

Alexis Sevillian added 10 points on 3-of-13 shooting for Iowa. Gustafson went 11 of 11 from the free-throw line for the second straight game and she was 8 of 9 from the field.

Katelynn Flaherty, ranked seventh nationally with 22.7 points per game, led Michigan (12-3, 1-1) with four 3-pointers and 24 points. Kayla Robbins and Deja Church each added 11 points. The Wolverines had their eight-game winning streak snapped.