PARIS (Reuters) - Last year's runner-up Marketa Vondrousova failed to last a round at the French Open when she was thrashed in little more than an hour by Poland's Iga Swiatek on Monday.
The left-handed Czech, seeded 15, went down 6-1 6-2 as teenager Swiatek dominated throughout with her all-court game.
Vondrousova lost to Ash Barty in last year's final and looked in dangerous form coming in after a semi-final run in Rome.
Another notable first-round casualty was 2009 champion Svetlana Kuznetsova, the 28th seed, who was beaten in three sets by fellow Russian Anastasia Pavlyuchenkova.
(Reporting by Martyn Herman; editing by Clare Fallon)