Mutua Madrid Open - Day Five

MADRID, SPAIN - MAY 04: Nick Kyrgios of Australia argues with match umpire Mohamed Lahyani during his straight sets victory against Stanislas Wawrinka of Switzerland in their second round match during day five of the Mutua Madrid Open tennis tournament at the Caja Magica on May 04, 2016 in Madrid. (Photo by Clive Brunskill/Getty Images)