Jason Kokrak held off home-region hero Jordan Spieth down the final holes Sunday to win the PGA Tour Charles Schwab Challenge by two strokes.The 36-year-old American fired a level par 70 in Sundays final round to finish 72 holes on 14-under 266 at Colonial Country Club in Fort Worth, Texas.Kokrak stumbled with bogeys at the par-4 15th and par-3 16th but closed with back-to-back pars to deny Spieth, who had ended a four-ye
