MANHATTAN — Kansas State was coming off two tough losses on the road, and its three leading scorers were struggling to make a shot against Texas Tech’s length and athleticism.Leave it to a less-heralded cast of players to come through in the clutch.Will Spradling scored a season-high 17 points, Nino Williams added 13 off the bench and the Wildcats (15-6, 5-3 Big 12) made a series of foul shots down the stretch to preserve a 66-58 victory Tuesday night.Kansas State wound up getting 25 points from its bench.“We’ve done it in other games. This isn’t the only game we’ve relied on them,” Spradling said. “Our bench has been a real factor for us.”Especially the way their stars were struggling: Marcus Foster had two points on 1-for-8 shooting, Shane Southwell missed all six of his 3-point shots and finished with four points, and Thomas Gipson scored seven before fouling out.“We knew they had a deep bench,” Texas Tech coach Tubby Smith said, “and they utilized it very effectively.”The Red Raiders (10-11, 2-6) closed within 48-47 midway through the second half, but the stingiest defense in the Big 12 kept answering the call, and Texas Tech never regained the lead.The Wildcats made 12 consecutive free throws in the closing minutes to seal it.“The first half we came out real slow.