Browse the gallery below for images of the day's play.
In Pictures: Shanghai Masters - Day Four
Andy Murray beats Stanislas Wawrinka, while Rafael Nadal suffers a shock defeat to Florian Mayer on day four of the Shanghai Masters.
Result: Rafael Nadal crashes out of Shanghai Masters>
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Shanghai Masters: Day Four - Rafael Nadal
Rafael Nadal whips a forehand across court during his defeat to Florian Mayer.
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