London: Agnieszka Radwanska booked her spot in the Wimbledon quarter-finals with a 7-5, 6-4 win over former world number one Jelena Jankovic on Monday.
The Polish 13th seed defeated the Serbian 28th seed -- who knocked out defending champion Petra Kvitova in the third round -- in an hour and 43 minutes.
Radwanska, the 2012 Wimbledon runner-up, faces Madison Keys of the United States, the 21st seed, in Tuesday`s quarter-finals.
Jankovic lost her cool with the umpire towards the end of the match, telling him: "We`re humans here.
"Well done. I don`t want to speak to you."
Zee News App: Read latest news of India and world, bollywood news, business updates, cricket scores, etc. Download the Zee news app now to keep up with daily breaking news and live news event coverage.
