Wimbledon 2015: Madison Keys out as power is beaten by finesse of Agnieszka Radwanska

Garbine Muguruza awaits in the semi-final

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The Independent Online

The power of young American Madison Keys in her first Wimbledon quarter-final eventually proved inferior to the finesse and experience of Poland's Agnieszka Radwanska, the 13th seed, who beat her 7-6 3-6 6-3 and will now play Garbine Muguruza.

Twice before Keys, coached by Lindsay Davenport, had lost her opening set and come back to win but a tight contest of few service breaks proved a bridge too far.

Keys's 47 aces in three previous rounds were an indication of what Radwanska could expect and there were plenty more - another dozen - where those came from. Her second serve was faster than the Pole's first, but overhitting tended let her down too often as the unforced errors piled up. The total was 21 to Radwanska's one by the end of the first set tie-break, which the Pole took 7-3 after spurning three set points in the previous game.

Keys, an Australian Open semi-finalist this year, had reached this stage without having played anybody ranked in top 75. Breaking Radwanska's serve in the first game may have suggested she was ready for a far tougher challenge but she was immediately broken back and before the tie-break found herself having to fight hard more than once to protect her own serve.

The second set went better as she cut down on the errors and broke through in the eighth game on a net cord for a 5-3 lead, followed by an eighth ace to level the match. It was the first set dropped by Radwanksa in the tournament but there was not to be another, yesterday at least. 

She profited from a bad leave by Keys in the eighth game and two errors too many in the ninth and last.