In the unpredictable theater of professional sport, it is often not the opponent but the body itself that delivers the most consequential blow. On Sunday in Chicago, franchise quarterback Caleb Williams was felled by a non-contact hamstring injury in the second half of a 9-3 loss to the Minnesota Vikings, leaving the field on a cart and leaving his team to reckon with an uncertain road ahead. The Bears, still early in their season, now face the quiet but pressing question every organization dreads: how long must they build without the player they built everything around?