Henri Kontinen . On 18 October 2010 , Kontinen reached his best singles rankings of world number 220 . He is currently ranked as world number 1 in doubles rankings after winning the Australian Open men 's doubles championship . He also won the 2017 Australian Open men 's doubles title with John Peers , reaching his first Grand Slam title in doubles .
Henri Kontinen is currently ranked first in the world for doubles in tennis.