In the long arc of franchise identity, some teams must rediscover who they were before they can become who they wish to be. On a Sunday night in East Rutherford, John Harbaugh stepped onto the Giants' sideline for the first time and offered a 28-20 victory over the Dallas Cowboys not as a spectacle, but as a philosophy made visible — patient, physical, and purposeful. It was the kind of debut that speaks less to a single game and more to the culture a coach intends to build, echoing a tradition the franchise has long struggled to reclaim.