Serena and Venus Williams won their respective matches at the U.S. Open on Sunday, setting the sisters up for a showdown as the younger Serena eyes the first U.S. Open Grand Slam in 30 years.

The 21-time major champion had been getting off to slow starts recently but was focused from the beginning on Sunday, beating 20-year-old American Madison Keys 6-3, 6-3 in just 68 minutes in the fourth round.

Serena’s win means that she will move onto the quarterfinals, facing elder sister Venus and marking the siblings’ fifth meeting — and their first in seven years — at the U.S. Open. Read more…

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Sibling rivalry: Serena and Venus Williams are about to face off