Mack Horton of Australia reacts after winning gold in the men's 400m freestyle final on Saturday. [Photo/Agencies]

Mack Horton clinched Australia's first gold medal of the Rio Olympics by upsetting favorite Sun Yang of China in the men's 400m freestyle final on Saturday.

北京时间8月7日，奥运会男子400米自由游泳决赛在奥林匹克水上运动场进行，最终澳大利亚选手霍顿获得金牌，这也是澳大利亚代表队在本届奥运会上的首金。中国代表队孙杨获得银牌。

Horton clocked 3 minutes 41.55 seconds, eclipsing Sun by just 13 hundredths of a second at the Olympic Aquatics stadium. Gabriele Detti of Italy was third in 3:43.49.

霍顿以3分41秒55夺冠，孙杨的成绩是3分41秒68，意大利人戴帝以3分43秒49获得第三名。

China's Sun Yang reacts after men's 400m freestyle final of swimming on Saturday.[Photo/Xinhua]

Mack, who finished second fastest in qualifying, is competing at his first Olympic Games in Rio. The 20-year-old was the bronze medalist in the 800m freestyle at last year's world championships in Kazan.

霍顿在预赛中排名第二，这是他首次出战奥运。这位20岁的小将曾在去年的喀山世锦赛获得800米自由泳铜牌。

Gold medallist Mack Horton of Australia shakes hands with silver medallist Sun Yang of China during the medal ceremony of the men's 400m freestyle. [Photo/Agencies]

Sun was the pre-race favorite, having won gold in the same event at the London 2012 Games. The 24-year-old is also the defending 1500m Olympic champion.

孙杨在赛前是夺冠的热门选手，四年前，在伦敦奥运会，孙杨勇夺400米自由泳冠军。24岁的孙杨还将参加1500米自由泳的比赛，并力争卫冕。