Doughty made his NHL debut in 2008 as an 18-year-old and was named to the All-Rookie Team. He is a two-time Stanley Cup champion with the Kings in the 2011–12 NHL season and the 2013–14 NHL season, two-time Olympic gold medallist with the Canadian national team at Vancouver 2010 and Sochi 2014, 2009 World Championship silver medallist, 2008 World Junior Championship gold medalist, and a Norris Trophy finalist from the 2009–10, 2014–15, 2015–16 and 2017–18 seasons, winning the trophy in 2015–16.