International Swimming League In 2019, she was a member of the inaugural
International Swimming League representing the
Cali Condors, who finished third place in the final match in Las Vegas, Nevada in December. Mallory had success as a part of many Condors relays, including the 400-meter medley relay which never lost all season.
2016 In December 2016 at the
World short course championships in Windsor, Canada, Comerford finished 5th in the
200 meter freestyle, and won two gold medals and one silver medal in relays.
2017 At the
2017 NCAA Championships, she won the 200 yards freestyle in a time of 1:40.36, tied with
Katie Ledecky. At the
2017 U.S. Nationals, she won the gold medal in the 100 meter freestyle in a new
US Open record of 52.81, and also qualified for the
2017 World Aquatics Championships. Comerford won her first long-course world title at the
2017 World Aquatics Championships in Budapest, Hungary, in the
4 × 100 m freestyle relay. She swam a
national record in the individual 100 meter freestyle of 52.59 on the first leg. She went on to win a gold medal in each of the five available relays – three women's relays and two mixed relays. In the
4 × 100 meter mixed freestyle relay, Comerford and her teammates
Caeleb Dressel,
Nathan Adrian, and
Simone Manuel broke the world record with a time of 3:19.60.
2018 World Championships Comerford won a total of eight medals, 5 gold medals, 3 silver medals, and one bronze medal, spanning both individual and relay events at the
2018 World Swimming Championships in
Hangzhou,
China in December 2018.
2019 At the
2019 World Aquatics Championships, Comerford placed seventh in the 100m freestyle, and (with
Zach Apple,
Caeleb Dressel, and
Simone Manuel) won the gold medal in the 4 x 100 mixed freestyle relay. ==Awards and honors==