Italy's Alessandro Giannessi returns the ball to Czech player Tomas Berdych on the fourth day of the ATP Qatar Open tennis competition in Doha on January 3, 2017. / AFP / KARIM JAAFAR (Photo credit should read KARIM JAAFAR/AFP via Getty Images)
Italy's Alessandro Giannessi returns the ball to Czech player Tomas Berdych on the fourth day of the ATP Qatar Open tennis competition in Doha on January 3, 2017. / AFP / KARIM JAAFAR (Photo credit should read KARIM JAAFAR/AFP via Getty Images)