TOKYO—Australia’s Emma McKeon became the first female swimmer to win seven medals at a single Olympic Games on Sunday after winning gold in the women’s 4×100 medley relay and completing the sprint double with victory in the 50m freestyle. American Caeleb Dressel confirmed his dominance in men’s sprint swimming, powering to victory in the men’s 50m freestyle to go with his 100m gold and clinching a fifth medal of the Games as Team USA triumphed in the men’s medley relay. There was more gold joy for the United States when Robert Finke completed the distance double, producing another late push to win the 1,500m to add to his 800m gold. McKeon swam the butterfly leg as part of Australia’s ‘Awesome Foursome’ in the medley relay, with Cate Campbell’s superb final leg pushing the United States into silver. That saw McKeon join Michael Phelps, Mark Spitz, and Matt Biondi as the …