[8] On August 29, 2021, Stewart broke the world record in the short course 100 meter backstroke at Piscina Felice Scandone in Naples, Italy as part of regular season competition during the 2021 International Swimming League representing the Cali Condors.

[19] He qualified for the b-final of the 100 meter freestyle the following morning, ranking thirteenth overall with a time of 50.06 seconds, in which he went on to swim a 50.39 and finish fifth, thirteenth-place overall.

[18] The first day of the 2022 US International Team Trials in Greensboro, North Carolina, April 26, 2022, Stewart swam a 49.26 in the preliminary heats of the 100 meter freestyle, qualifying for the evening b-final ranking 13th overall.

[21] Day two of competition, he qualified for the final of the 50 meter butterfly with an overall rank of sixth and a time of 23.89 seconds in the morning prelims heats.

[23] With a time of 52.40 seconds in the 100 meter butterfly preliminary heats on day three, he qualified for the b-final of the event ranking tenth.