Harris finished in 13.24 seconds, with Merritt seven-hundredths of a second behind. Devon Allen, a former college football player at Oregon, took third.
Merritt, 31, said he knew he would make a strong return, although he encountered many skeptics.
“I was told, ‘You’ll never come back to the sport with the medications you have to take that are lifelong,’” Merritt said. “It was something that went in one ear and out the other.”
The crowd erupted Sunday when Ryan Crouser’s final heave in the shot-put surpassed Joe Kovacs’s best to give Crouser the win. Crouser’s distance of 22.65 meters (74 feet, 3 ¾ inches) edged a 22.35-meter throw by Kovacs, who already had an automatic bye into worlds as the defending world champion.
“It’s a confidence boost, showing I can come through on the last throw,” Crouser said.
The reigning Olympic gold medalist in the 400 hurdles, Dalilah Muhammad, won in a race in which the top three finishers all…