According to the US Open rules, players have 25 seconds max between points. This time is displayed on the serve clock and any violation results in a Time Violation. Since this is the first Time Violation offense, it results in a warning.
It was also worth noting that since the warning, Rafael Nadal had been struggling with his first serve. Afterwards, he approached chair umpire Ali Nili and he appeared to say, “Not one day I feel that pressure. I think that was a bit much”
Rafael Nadal has often been criticised for taking too long to serve and there was a reason that the shot clock was introduced. One of the most vocal critics is fellow tennis player, Nick Kyrgios.
The mercurial Australian seemed to have a bit of a vendetta against the Spaniard. However, he was right about the fact that Rafael Nadal likes to take his own sweet time while serving.
Coming back to this match, Rafael Nadal did not seem particularly thrilled at umpire Ali Nili’s decisions.
However, he seems to be soldiering on, as the sole surviving member of the Big 3. On the other end of the court, Daniil Medvedev has been on a roll and managed to enter the final to face the former World Number 1.
So far in his entire career, the US Open 2019 final has been Medvedev’s best ever run in Grand Slams.