At the U.S. swim trials, a podium night for the graybeards. Olympic veterans Katie Ledecky, Ryan Murphy and Lilly King take to the winner’s stage at Indianapolis.

David Plummer made his Olympic debut at age 30, taking 100m back bronze in 2016 and joining the 21-year-old gold medalist Murphy on the podium. “As a competitor, it’s hard for me to be like, I’m going ...