Both men were serving well .
A first set tiebreaker seemed inevitable , but fans were clueless as to the velocity of their serves until the tenth game ; the earlier weather had forced the serve speed radar offline , and it had to be rebooted .
Both men were serving well and a first set tiebreaker seemed inevitable , but fans were clueless as to the velocity of their serves until the tenth game ; the earlier weather had forced the serve speed radar offline , and it had to be rebooted .