How Frances Tiafoe went from sleeping in a tennis center to the US Open semifinals |  CNN

How Frances Tiafoe went from sleeping in a tennis center to the US Open semifinals | CNN

CNN — After stunning 22-time Grand Slam champion Rafael Nadal reached the quarter-final of the US Open on Monday, Frances Tiafoe threw his racket to the ground and covered his face in amazement. It looked like a defining moment in the 24-year-old American’s career; the culmination of hard work and raw talent that has long …

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