Andrew Cashner pitched brilliantly into the ninth inning and the San Diego Padres beat San Francisco 3-2 Saturday night to keep the Giants from gaining ground on the NL West-leading Los Angeles Dodgers.San Francisco Giants starting pitcher Yusmeiro Petit throws against the San Diego Padres during the first inning of a baseball game Saturday, Sept. 20, 2014, in San Diego.San Diego Padres' Will Venerable, right, is congratulated by Jedd Gyorko (9) and Alexi Amarista after scoring a run in the third inning against the San Francisco Giants of a baseball game Saturday, Sept. 20, 2014, in San Diego.San Diego Padres starting pitcher Andrew Cashner throws against the San Francisco Giants during the first inning of a baseball game Saturday, Sept. 20, 2014, in San Diego.