Ty Wigginton had a walk-off RBI single in the bottom of the 13th inning to give the Rockies a 3-2 win over the White Sox on Tuesday night at Coors Field. Seth Smith plated the other two runs for Colorado, which snapped a three-game slide. Rex Brothers worked a scoreless frame to register the victory. Alexei Ramirez clubbed a solo home run and Juan Pierre added an RBI double for Chicago, which has dropped three of its last four contests. Will Ohman was saddled with the loss. Mark Buehrle [[ BURR-lee ]] gets the nod against Ubaldo Jimenez in tonight's second installment.