WALNUT, Calif. — DK Metcalf launched slowly from the starting blocks, faded over 100 meters and learned in 10.363 seconds on Sunday that elite football speed does not translate easily to elite track speed.
An All-Pro receiver for the Seattle Seahawks, Metcalf is impressively fast for a football player. He delivered one of the most memorable plays of the last N.F.L. season, exceeding 22 miles an hour while wearing his helmet and pads to chase down an Arizona defensive back who intercepted a pass.
But in what he said was his first 100-meter race, Metcalf finished last in his preliminary heat against second-tier professional sprinters and did not qualify for the final at the Golden Games, a tuneup for next month’s United States Olympic track and field trials.