SAN DIEGO – The past two nights, the Los Angeles Dodgers have hit the thick marine air in San Diego and scraped across three runs in 22 innings to lose two games. With the San Diego Padres' pitching staff holding them down, helpless, they have watched their division lead shrink to two games in the loss column, the tightest the National League West has been in more than three weeks.There was a visible frustration in the clubhouse following Saturday night's 2-1 loss in 10 innings to the Padres at Petco Park, the second walk-off, extra-innings loss in a row.