1. Mark Edmondson - Australian Open 1976

Now we come to the only player in the countdown who is from a long gone era. Mark Edmondson was mopping the floors of a hospital when he got the call to play in the Australian Open. Being ranked 212th, he got into the tournament as someone else pulled out and he made full use of it.
Edmondson had to travel an hour from his friend's house for every match as he couldn't afford accommodation. He looked like he meant business when he got past the 1st round in 5 sets. The Australian beat 4 Top 50 opponents, including previous finalists Dick Clearly and Paul Dent, to reach the semis. He defeated the legendary Ken Rosewall, the No.1 seed, in 4 sets to reach the finale.
The defending champion John Newcombe couldn't stop him as he won the final 6-7, 6-3, 7-6, 6-1. Mark Edmondson was the first unseeded player to win a Grand Slam title and is the lowest ranked male Grand Slam winner.