NEW YORK, NY - AUGUST 30: Andy Murray of Great Britain warms up as coach Ivan Lendl looks on prior to his first round Men's Singles match against Lukas Rosol of the Czech Republic on Day Two of the 2016 US Open at the USTA Billie Jean King National Tennis Center on August 30, 2016 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Mike Hewitt/Getty Images)
