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ROTTERDAM, NETHERLANDS - FEBRUARY 09: Ernests Gulbis of Latvia in action against Gael Monfils of France during day 2 of the ABN AMRO World Tennis Tournament held at Ahoy Rotterdam on February 9, 2016 in Rotterdam, Netherlands. (Photo by Dean Mouhtaropoulos/Getty Images)

ROTTERDAM, NETHERLANDS - FEBRUARY 09:  Ernests Gulbis of Latvia in action against Gael Monfils of France during day 2 of the ABN AMRO World Tennis Tournament held at Ahoy Rotterdam on February 9, 2016 in Rotterdam, Netherlands.  (Photo by Dean Mouhtaropoulos/Getty Images)