Latest finish to a Grand Slam singles tennis match

Latest finish to a Grand Slam singles tennis match
Who
Unknown
Where
Australia (Melbourne,)
When
20 January 2008
The latest finish to a Grand Slam singles tennis match is 4.33 am for the match between Lleyton Hewitt (Australia) and Marcos Baghdatis (Cyprus), in the Australian Open match played in Melbourne, Australia on 19-20 January 2008. Hewitt won the match 4-6 7-5 7-5 6-7 (4-7) 6-3.

Image of clock used in 2009 edition showed time of 4:35 and caption information from that image gave same time.