TOKYO—There are some things track fans are used to: Nobody stops the Jamaican women at these Olympics and the tireless Sifan Hassan is a contender for a medal in every distance race she enters.
Other things might take some getting used to: Italy is a sprint power. It now owns the gold medal in the men’s 4x100-meter relay to go with the shocking 100-meter gold that Marcell Jacobs won.
