This, though, is the big one today: Group G’s United States vs. Portugal. The U.S. surprised just about everyone, maybe even themselves, by beating Ghana in its first game, and now shares the Group G lead with Germany, which has much more secure footing at the top because, in its initial game, it trounced Portugal and emerged with a plus-four goal differential, a key factor in tiebreakers. (The U.S., after its first game, has a goal differential of plus-one.) So Portugal, which didn’