Mutua Madrid Open - Day Six [Getty Images]

MADRID, SPAIN - MAY 05: Novak Djokovic of Serbia lines up a forehand against Roberto Bautista Agut of Spain in their third round match during day six of the Mutua Madrid Open tennis tournament at the Caja Magica on May 05, 2016 in Madrid,Spain (Photo by Clive Brunskill/Getty Images)

Getty Images Sport Clive Brunskill