BEIJING (AP)—Yelena Isinbayeva got the Olympic gold and a world record; American Jenn Stuczynski got the silver and a lesson in humility. And we now have a new rivalry that should make woman’s pole vaulting fun to watch for many more years to come. Big poles and big mouths don’t go together. Stuczynski knows that now. Pole vaulting isn’t basketball or boxing. It’s far too graceful of a sport for the kind of trash-talk she doled out before the Beijing Games. “I hope we do some damage,” she had said, “and, you know, kick some Russian butt.” Big mistake.