American Frances Tiafoe upsets Rafael Nadal in 4th round of US Open

Twenty-two-time grand slam champion Rafael Nadal was upset in the fourth round of the US Open on Monday by American Frances Tiafoe at Arthur...

Twenty-two-time grand slam champion Rafael Nadal was upset in the fourth round of the US Open on Monday by American Frances Tiafoe at Arthur Ashe Stadium in Flushing, New York.

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