MILAN, ITALY - NOVEMBER 06: Hawkeye Live is seen during Day One of the Next Gen ATP Finals at Fiera Milano Rho on November 6, 2018 in Milan, Italy. (Photo by Julian Finney/Getty Images)
MILAN, ITALY - NOVEMBER 06: Hawkeye Live is seen during Day One of the Next Gen ATP Finals at Fiera Milano Rho on November 6, 2018 in Milan, Italy. (Photo by Julian Finney/Getty Images)