Some Backhand Videos:
- Stefan Edberg – A series of great backhands from Edberg against Lendl
- Roger Federer – Saving match point at Wimbledon 2008
- Petr Korda – Korda passing Sampras at the 1997 US Open
- Rod Laver – Laver vs. Bjorn Borg in 1976
- Ivan Lendl – Nice backhands by Lendl vs. Becker
- Gustavo “Guga” Kuerten – Kuerten in the 2000 French Open Final*
- Ken Rosewall – Rosewall vs. Roche at the 1970 US Open
* – Guga needs better quality highlights on youtube. Everything is grainy.
Tennis Abides: Dan Martin on Tennis and Life 
This is just as difficult to answer as the GOAT question. I think the fact that Federer has to deal with and actually usually prevails against guys who mostly play with two hands and smack the crap out of the ball gives him a huge edge over pretty much everyone else on this list.
Yeah, at one time Lendl, Becker, Edberg are the top 3 players and all have one handed backhands. Sampras, Stich, Rafter, Krajicek, etc. Now Federer is probably the last great champion for some time to come with a one-handed backhand. Something in today’s game is favoring two handed backhands and he is still in the top 5 so his must be pretty good.
Guga had the best one-hander for clay.
Would like to see what a young Korda would do with today’s racquets.