Venus Williams has heaped praise on sister Serena after she overcame adversity and won the Wimbledon title.

Serena won her fifth Wimbledon title on Saturday, less than two years after a near-death experience after stepping on glass and injuring her foot, with the subsequent complications - including a blood clot on her lungs - forcing her, in her own words, to her "deathbed".

However, Serena roared back from the incident to claim the women's singles title, as well as the doubles with Venus at SW19.

"She hasn't had an easy road. Things have happened in her life that you can't predict or control, so it's hard to be in that situation," said Venus.

"For her to fight through that and come back and be a champion, and not only that, but to have made the final of the US Open, reached the top five, all these achievements that she's done that I don't think anyone else can do, is just amazing.

"She's such a fighter. You never say die. I think positivity really brought her a long way in that. I don't think either of us believe that we can be defeated by anything. Nothing has defeated us yet, so we're going to keep that track record."

The Williams sister are now level on five Wimbledon singles titles each.