There have been some truly heroic ones over the years, but which ones stand out for you? For me, even though i don't like the guy or his playing style, it has to be this:
In the fourth round of the 1987 Wimbledon tournament, Connors defeated Mikael Pernfors, ten years his junior, 1-6, 1-6, 7-5, 6-4, 6-2 after having fallen behind 1-6, 1-6, 1-4 in the fourth set.