Nestor Cortes had one of the lowest moments of his baseball life last October when he gave up the first walk-off grand slam in World Series history to Freddie Freeman. In a new uniform and a new pennant race Saturday night, Cortes faced his Dodgers demons head-on — and he came out smiling. The veteran left-hander produced six brilliant innings of one-hit ball while his San Diego Padres surged past Los Angeles into sole possession of first place in the NL West with a 5-1 victory.