Czech Tereza Bejlek continued her stunning run at the Cincinnati Open as she upset American Madison Keys to reach her first WTA 1000 semi-final, where she will face fourth seed [PERSON_NAME]. Unseeded Bejlek, 20, has now beaten three major champions on her run to the last four, after taking the scalps of world number one [PERSON_NAME] in the fourth round and [PERSON_NAME] earlier in the tournament.

She beat Keys 3-6 6-4 7-6 (7-5) in the quarter-finals as she seeks her second WTA title, having won the Abu Dhabi Open in February. Bejlek was a set down and trailing 3-1 in the second set when she won five of the next six games to level the match and then fought back from 4-2 down in the decisive tie-break to win in two hours and 37 minutes.

The world number 35 said: "We had a kind of big talk with my team a couple of weeks ago, and since that moment I feel that it's going quite well and I'm getting better in the believing in myself and improving also physically on the court."