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VALENCIA, SPAIN - OCTOBER 31: Steve Johnson of the United States returns a shot to Roberto Bautista of Spain during day six of the ATP World Tour Valencia Open tennis tournament at the Ciudad de las Artes y las Ciencias on October 31, 2015 in Valencia, Spain. (Photo by Manuel Queimadelos Alonso/Getty Images)

VALENCIA, SPAIN - OCTOBER 31:  Steve Johnson of the United States returns a shot to  Roberto Bautista of Spain during day six of the ATP World Tour Valencia Open tennis tournament at the Ciudad de las Artes y las Ciencias on October 31, 2015 in Valencia, Spain.  (Photo by Manuel Queimadelos Alonso/Getty Images)