ARLINGTON, Texas — As far as opening day celebrations go, it’s impossible to top the unfurling the ol’ championship banner from the rafters. Especially if it’s the first one you’ve ever unfurled. Nevertheless, the Rangers tried to do it Thursday. Came pretty close, too. A bottom-of-the-ninth game-tying pinch-hit home run from a slap hitter. High drama for the rookie phenom making his debut. And…