San Francisco at San Diego

San Francisco is second worst in baseball in runs scored and on-base percentage, plus dead last in slugging. They are in Petco Park, the toughest place to hit. San Francisco plays its fifth straight road game, scoring a total of four runs the last three contests. The Giants are on a 22-47 run on the road, plus 17-38 following a win. The visitors are stuck with lefty Matt Moore (4-12, 5.38 ERA), who is 1-4 in 12 road starts with a 6.71 ERA and 1.75 WHIP. The Giants are also 17-35 on the road against a team with a winning home record. San Diego plays the second game of a long homestand. Padres' righty Luis Perdomo has posted a 3.63 ERA against division rival San Francisco this season and is 1-0 with a 3.94 ERA in seven career appearances against them. And San Diego is 24-15 against an NL team with a batting average of .250 or worse this season. Back the Padres.