Defending champion Novak Djokovic trailed big-serving American Sam Querrey by two sets to love when rain stopped play at Wimbledon.
Querrey, the 6ft 6in world number 28, led the world number one 7-6 (8-6) 6-1 in their third-round match.
Persistent rain then saw the match postponed until Saturday.
Djokovic has not lost in the third round of a Grand Slam since 2009, and is trying to become only the second man to win five successive major titles.
The 29-year-old Serb is on course to win the first calendar-year Grand Slam in men's tennis since Rod Laver in 1969.