Hayden was a bronze medal winner in the 100m freestyle at the 2012 Summer Olympics in London. He was co-World Champion in the same event in 2007 with Filippo Magnini of Italy. By winning the 100m, Hayden became the first Canadian in 21 years to win a gold medal at the World Aquatic Championships. He was also the first Canadian to appear in the 100m final at the Olympics since Dick Pound at the 1960 Summer Olympics and the first Canadian to win an Olympic medal in the 100m. Hayden adds a further 3 silver and 1 bronze medal to his World Championship totals. He is the current reigning Commonwealth Games champion in both the 50m and 100m freestyle events. In addition, Hayden is currently the Canadian record holder in the 200m, 100m and 50m freestyle in both the short-course and long-course. He is also a former World Record Holder in the 4×100m medley relay, and the 4×200m freestyle relay. He is back and Brent is aiming for a spot on #Tokyo2021 team.