Just when you thought this crazy week at Petco Park San Diego couldn't get any crazier, the craziest thing possible happens. The Padres defeated the Giants 7-6 in 10 innings on Saturday night, scoring the winning run when closer Santiago Castilla lost his balance on the hill and was called for a balk. Yes, the ultra-rare and always embarrassing walk-off balk literally tripped up the first-place Giants and set off another celebration at Petco Park.