Canada at the Summer Olympics became the first Canadian Summer Olympian to win a medal in four straight Olympics. After George Hodgson won two gold medals in the 1912 Stockholm games, it would be 72 years before Alex Baumann became the second Canadian swimmer to win Olympic gold, when he won both individual medley events in world record time in the 1984 Los Angeles games. Victor Davis (1984), Anne Ottenbrite (1984), Mark Tewksbury (1992) and Penny Oleksiak (2016) are the only other Canadian swimmers to win gold medals. In 2004, Canada failed to win a medal of any colour in swimming for the first time
Australia at the 2012 Summer Olympics lost his Olympic record to France's Renaud Lavillenie, after failing to clear the height in the finals. Australia left London with a total of three track and field medals at the Olympics. Sprint hurdler and pre-Olympic favorite Sally Pearson became the first woman to win the nation's gold medal in the track and field since Cathy Freeman in 2000. Long jumper Mitchell Watt, competing at his first Olympics, became the fourth man to claim the silver medal in that event. Jared Tallent was initially presented with the silver medal for the men's 50 km race walk, matching the silver medal