Angelique kerber crashed out of the qatar total open, turning in an error-strewn performance to allow Daria kasatkina 6-4, 0-6, 6-4 win - and a place in the quarterfinals against Monica Puig.
"It's my second year on the WTA Tour, so I have to grow up!" laughed Kasatkina in her on-court interview after the match.
"I am happy that I went through this and I am in the quarters."
The former World No.1 missed six break point chances in the first set, and Kasatkina was very happy to capitalise.