LONDON (Reuters) - Five-times champion Venus Williams followed her sister Serena out of Wimbledon on Monday when she was outplayed by Bulgaria's Tsvetana Pironkova for the second year in a row.

The American, seeded only 23rd after spending most of the year out injured, failed to fire in the fourth-round clash and was hammered 6-2 6-3 on Center Court.

Pironkova, the 32nd seed, will now face Petra Kvitova with both players bidding for semi-final places again after their surprise runs last year.

(Reporting by Martyn Herman, editing by Ed Osmond)