ESPN College Football

AMES, Iowa (AP) -- Darren Sproles ran for a career-high 201 yards and three touchdowns and sparked a third-quarter outburst that sent Kansas State to a 45-0 victory over Iowa State on Saturday.

Kansas State (8-3, 4-2 Big 12) led 14-0 at halftime, then scored three touchdowns in the first 5:42 of the second half to break it open and send Iowa State (2-7, 0-5) to its seventh straight loss.

Sproles sprinted 70 yards for a touchdown on the first play of the half and also had scoring runs of 23 and 32 yards. He carried 19 times in topping his previous best of 175 yards against Cal in the season opener.

Quarterback Ell Roberson added 66 yards in eight carries and completed 10 of 12 passes for 96 yards and two touchdowns to help keep the Wildcats in contention for the Big 12 North championship. Neither Sproles nor Roberson returned after Kansas State opened a 35-0 lead with 9:18 left in the third quarter.

Iowa State coach Dan McCarney gave Waye Terry his first start at quarterback to try to get the Cyclones going. Terry was sacked on the game's first play and that set the tone on day fans braved a 1-degree wind chill.

The Cyclones were held to a season-low 140 yards and were shut out for the second straight game. Iowa State had not been blanked in consecutive games since 1958.

Kansas State has defeated Iowa State 10 straight times and in the last four victories has outscored the Cyclones 201-20. Iowa State looked more competitive in the first half of this one and actually ran two more plays than Kansas State in that half.

But things quickly unraveled for the Cyclones in the second half.

Kansas State started the half at its own 30 and Sproles burst through a big hole in the middle of the line. He wasn't touched until safety Marc Timmons tried to push him out of bounds at the Iowa State 2.

After Iowa State went three-and-out, Kansas State zipped 86 yards in six plays to go up 28-0, Roberson finishing the drive with a 20-yard touchdown pass to James Terry with 10:25 left in the quarter.

Cedrick Williams intercepted Terry three plays later and with a 15-yard penalty tacked on for a late hit, Kansas State took over at the ISU 32. On the next play, Sproles found another hole, juked cornerback DeAndre Jackson at the 20 and outran the pursuit to the end zone to make it 35-0.

Kansas State took a 7-0 lead on Sproles' 23-yard touchdown run with 5:35 left in the first half. Roberson hit Thomas Hill on a 9-yard TD pass on the first play of the second quarter.

Iowa State's Lane Danielsen caught four passes for 55 yards to become the school's career leader in receptions with 154. He had been tied with Tracy Henderson at 150.