Tim Hudson allowed four runs in the first inning and the San Francisco Giants were held to three hits in a 5-0 loss to San Diego on Friday night that dropped them 3 ½ games behind the Los Angeles Dodgers in the NL West race.San Francisco Giants starting pitcher Tim Hudson throws against the San Diego Padres during the first inning of a baseball game Friday, Sept. 19, 2014, in San Diego.San Diego Padres shortstop Alexi Amarista, left, reacts after San Francisco Giants' Angel Pagan (16) stole second base during the first inning of a baseball game Friday, Sept. 19, 2014, in San Diego.San Diego Padres starting pitcher Odrisamer Despaigne throws against the San Francisco Giants during the first inning of a baseball game Friday, Sept. 19, 2014, in San Diego.San Diego Padres' Alexi Amarista watches as he hits a double against the San Francisco Giants during the first inning of a baseball game Friday, Sept. 19, 2014, in San Diego.