It was Kristyna's first win over a top-five ranked player and she will go on to play fellow Czech Barbora Strycova in the quarter-finals.
"I prayed hard. Prayers not to win but for strength. All glory to God," the World No 1 said.
The older Serena Williams gets, the more dominant she becomes. At 33, an age when most players start to fade, her grip on women's tennis looks as secure as ever.
Venus Williams and CoCo Vandeweghe won the opening singles matches to give holders the United States a commanding 2-0 lead in their Fed Cup World Group opener against the Netherlands in Asheville, North Carolina on Saturday.
With Serena Williams vying to safeguard her World No 1 ranking and Djokovic fighting off a wrist injury, expect to see a few surprises at the fourth and final Grand Slam of the year
List of Wimbledon women's singles champions:
List of Australian Open women's singles champions since the event began in 1922 (Australian unless stated):
World No 1 Novak Djokovic added to the sexism row, saying male tennis players should earn more money than their female counterparts as more people watch their matches.
The Swiss great is looking to win a 102nd tour-level trophy and move closer to Jimmy Connors' record of 109.
A quick guide into the life of Serena Williams, the GOAT - The Greatest of All Time!
'The one match I would really like to watch would be Williams versus Djokovic.'
Dhruv Munjal insists that women's tennis needs a golden generation, one that can make matches competitive and viewing more riveting.
Andy Murray may have a dismal record in the Australian Open final, but he is not the only tennis star to come up short at the majors.
Factbox on American Serena Williams, who plays sister Venus in the final of the Australian Open on Saturday.
Serena Williams and friend Caroline Wozniacki arranged a get-together in the US Open women's final, winning their Friday semi-finals in contrasting fashion on a stifling hot, humid day at Flushing Meadows.
Following Serena Williams's win over Angelique Kerber for her 7th Wimbledon crown, here is a list of Wimbledon women's singles champions since 1922:
List of Wimbledon women's singles champions:
Playing tennis professionally can be difficult physically, mentally and emotionally. But the tennis courts have often been the venue for for blossoming romance as love-struck couples decide it is game, set and match.
Following Serena Williams's 19th Grand Slam title, here is the list of Australian Open women's singles champions since the event began in 1922 (Australian unless stated)
On the occasion of Chinese New Year, we bring you a look at what 2015, the Year of the Sheep has in store for you!