In Irvine, California, at the 2022 Summer National Championships, King had an outstanding performance in the long course, with a win in the 50 freestyle with a time of 21.83 and in the 100 freestyle where he tied with a time of 48.44. As a result, King became a member of the 2022-23 USA National Team for the first time in his swimming career. In April 2023, though he sat out some of his college eligibility in 2022, he trained with Coley Stickles at Texas Ford Aquatics who had taken time out to coach athletes for the 2021 Olympics, which had been postponed due to the COVID epidemic. Stickles was a former coach for University of Alabama where he had coached King. King represented the United States at the 2023 World Aquatics Championship in
Fukuoka, Japan. He took a bronze, gold, and silver in relay events. These included the 400 free relay where the American team took the bronze, a mixed 400 relay where the American team took a silver, and the 400 medley relay where King swam only the preliminaries, but the team took a gold in the finals. In the 2024 World Aquatics Championships in Doha, King took a gold and two bronze medals in 4x100 relay events. ==2024 Paris Olympic gold medal==