Much of the National League West is off to a higgledy-piggledy start. The Padres are 4-2 against the Dodgers but 1-11 against everyone else. The Rockies entered play Saturday 0-3 against the Giants but undefeated at home and 13-1 against all others. The Dodgers are muddling along trying to reach .500.

The Giants, despite a hiccup in Milwaukee, have to like where they are, 8-1 against the division opponents after beating San Diego 5-0 Sunday for a three-game sweep.

The one West foe they have not seen, the Diamondbacks, begin a three-game visit to AT&T Park on Monday night.

Barry Zito, coming off the worst statistical start of his career (nine runs, 2 2/3 innings) put that well behind him with seven shutout innings against the Padres. He allowed five hits, with one walk and four strikeouts.

Zito has not allowed a run in 21 innings at home this year.

Chad Gaudin completed the Giants’ second consecutive shutout win and fifth of the season.

Angel Pagan hit a two-run double to start a five-run onslught on left-hander Eric Stults, but the game was notable more for Buster Posey’s first home run of 2013, with Pablo Sandoval aboard in the fifth, which gave the Giants a 5-0 lead.

Giants hitters basically faced another Zito in Stults, a lefty who throws fastballs in the mid-80s and gets hittters off-balance.