SEATTLE, Wash - Kyle Weaver ignited a second-half surge with all 16 of his points tonight as Washington State beat San Diego State, 64 to 54, in a game played in Seattle. At 11-1, the Cougars are off to their best start in 15 years. Washington State trailed 33 to 23 at halftime, but rallied with a 21 to nothing run in the second half. Robbie Cowgill scored a career-high 17 points for W.S.U and Nikola Koprivica added 11. Weaver also had 11 rebounds. Brandon Heath led San Diego State with 20 points, but went 17 minutes of the second half without scoring. Heath, the all-time leading scorer of the Mountain West Conference, had 13 points in the first half, but Weaver blanketed him in the second half, holding him to 2 for 7 shooting. San Diego State shot just 45 percent and was held 25 points below its season average. The Cougars begin Pac-10 Conference play next Thursday night at Number One U.C.L.A.