No. 6 Michigan State 71, No. 12 Iowa 69 (OT): Matt Costello had career highs of 11 points and 12 rebounds to help the Spartans win the Big Ten contest and snap the Hawkeyes’ 20-game home winning streak.

Keith Appling scored 16 points and Denzel Valentine added 12 for Michigan State (19-2, 8-1), which has won 12 of its last 13 games. Travis Trice contributed 10 points for the Spartans, who were again without center Adreian Payne (foot) and forward Branden Dawson (hand).

Roy Devyn Marble scored 21 points for Iowa (16-5, 5-3), which lost for the second time in three games. The Hawkeyes went 14-plus minutes with a field goal over the second half and nearly the entire overtime, and missed a chance to force a second extra session when Mike Gesell’s driving layup at the buzzer was off the mark.

Costello snapped a tie with a free throw with 1:47 remaining in overtime and his putback hoop and a 3-pointer by Russell Byrd gave the Spartans a 70-64 lead with 34 seconds left. The Hawkeyes got within two on Marble’s 3-point play with six seconds on the clock and Appling missed two free throws with 4.7 seconds left for Michigan State before Gesell came up empty.

Iowa attempted 16 free throws before Michigan State attempted its first and used its 12 first-half makes to take a 30-26 lead into the break. The Hawkeyes didn’t make a field goal over the final 9:56 of the second half and Gesell hit one of two free throws with 47.7 seconds left to force the overtime.

GAME NOTEBOOK: Iowa was 30-of-43 from the free-throw line while the Spartans were 11-of-20. … Michigan State G Gary Harris had only nine points on 3-of-9 shooting after averaging 24.7 points over the previous three games. … Marble pulled up lame with 4:35 to play in regulation due to cramping in his calf and returned 39 seconds later.