SANTA CLARA (AP) — Frank Gore zig-zags his way for important gains up the middle, or to break a big run outside on the edge.At this stage of his career, San Francisco’s veteran running back is still among the best in the game at seeing holes in an opposing defense before they actually appear. And you can bet Gore gets a thrill out of surprising opponents who figure he might have lost a step now that he’s 30.“I like when they think that,” Gore said with a grin. “That’s why I sneak up on a lot of guys in the open field.