Serena Williams Upset In U.S. Open Semifinals

By Mike Murphy Markets MarketWatch Pulse

Serena Williams was ousted in the semifinals of the U.S. Open on Thursday night for the second year in a row. Williams, the heavy favorite, fell to 10th-seeded Karolina Pliskova of the Czech Republic 2-6, 6-7 (5). Williams was playing on back-to-back nights after winning a three-set quarterfinal match Wednesday. After her loss, Williams' coach said she had injured her knee Wednesday. The loss denied Williams a record-breaking 23rd Grand Slam victory, and will end her 187-week reign as the world's No. 1-ranked female player.

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