AMES, Iowa (AP) -- Curtis Stinston scored 21 points and Rashon

Clark added 17 to lead Iowa State (No. 23 ESPN/USA Today, Unranked AP) to a 72-64 win over Portland

State on Wednesday night in the opening round of the American

Family Insurance Cyclone Challenge.

Portland State (1-2) got 19 points from Juma Kamara and 11 by

Jake Schroeder.

Iowa State (2-0), which struggled against Portland State's zone

in the first half, held a two-point halftime lead and opened the

second half with a 10-1 run for a 43-32 lead.

The Cyclones extended their lead to 14 points before Portland

State rallied back.

Schroeder hit a pair of 3-pointers during a 14-4 run that

brought the Vikings within four points with about 9 minutes left.

The Vikings remained close until the final minutes, but the

Cyclones put the game away by making eight free throws in the last

50 seconds.

Iowa State plays Howard at 8 p.m. Friday in the second round of

the tournament.

Portland State and Iona play at 5:30 p.m. Friday.