San Diego @ San Francisco preview

Last Meeting ( Apr 29, 2014 ) San Diego 0, San Francisco 6

The San Francisco Giants seek their sixth victory in seven games as they wrap up a three-game series against the San Diego Padres on Wednesday. Backup catcher Hector Sanchez had three RBIs as the Giants blanked the Padres 6-0 on Tuesday to improve to 9-5 at home and maintain a half-game lead over the Colorado Rockets in the National League West. San Diego was blanked for the fourth time this season and ranks last in the majors with 75 runs scored.

The Padres have been shut out in two of their last four games and have scored three or fewer runs in 19 of their 28 games. San Diego won Monday’s series opener and a victory in the finale would snap a nine-series winless streak at AT&T Park as the Padres last won a series in San Francisco by taking two of three to end the 2010 campaign. Giants star Buster Posey is 6-for-14 with two homers in his last four games to raise his average 34 points to .253.

TV: 10:15 p.m. ET, FSN San Diego, CSN Bay Area (San Francisco)

PITCHING MATCHUP: Padres LH Robbie Erlin (1-3, 6.35 ERA) vs. Giants RH Tim Hudson (3-1, 2.19)

Erlin has lost three consecutive starts, including one against the Giants on April 20 when he gave up four runs and three hits in six innings. He is 0-1 with a 4.76 ERA in two career outings against San Francisco. Erlin was roughed up for eight runs and 13 hits in 5 1/3 innings while losing to Washington in his last turn.

Hudson’s only loss of the season came against San Diego when he gave up two runs and eight hits in seven innings April 19. He bounced back in his last turn to hold Cleveland to one run and four hits in seven innings. Hudson is 6-2 with a 2.78 ERA in 14 career appearances (13 starts) against the Padres.

WALK-OFFS

1. The Giants are 11-1 when they score first and 5-10 when they don’t.

2. Padres 2B Jedd Gyorko (paternity leave) and OF Seth Smith (groin) are expected to be in the starting lineup for the series finale.

3. San Francisco OF Angel Pagan slugged his seventh career leadoff homer Tuesday.

PREDICTION: Giants 7, Padres 2