Standing on the sidelines in the final seconds, Cowboys receiver CeeDee Lamb kept tapping his chest, the universal sports sign for “That’s on me.” No place to hide from it, so you may as well wear it.

It has become a strangely familiar sight: A player streaking toward the end zone, well beyond the reach of defenders, a touchdown looking like a certainty. And then ... Just before crossing the goal ...

In 2015, star U.S. distance runner Molly Huddle was rounding the final turn of the 10,000 meters at the world championships, almost certain to earn a bronze medal. Runners from Kenya and Ethiopia had ...