PHOENIX — Buster Posey chose a hell of a time to break through with runners in scoring position.Posey scorched a double to right-center with the bases loaded in the top of the ninth inning Saturday, breaking a tie and leading the Giants to a 5-3 win over the Diamondbacks. Posey entered the night with just three hits in his previous 30 at-bats with runners in scoring position. Opening Day at Revamped SF MOMA Draws Large Crowd The double got the bullpen off the hook on a night when Jake Peavy deserved to put a "W" by his name. Peavy allowed one run in six innings and left with a 3-1 lead.Denard Span got the Giants off to a quick start, tripling and scoring on Joe Panik's flare to left. Peavy had a quick first, but ran into trouble in the second when a walk and Matt Duffy error put two on with no outs. Chris Owings lined a double, tying the game and putting two in scoring position, but Peavy struck out Nick Ahmed, caught Patrick Corbin's bunt, and kick-saved Jean Segura's liner over toward first for the third out of the inning. One Dead, Two Hospitalized in Three-Car Collision on I-880 Hunter Pence gave Peavy a lead in the fourth, hitting a low liner over the wall in left for a...