Portuguese chair umpire Carlos Ramos sent Williams into a rage when he handed the 23-time Grand Slam champion a code violation in the second game of the second set after he spotted Mouratoglou making hand signals from the player's box.
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The reaction was split with some feeling as though Ramos was harsh on Williams, while others believed the 36-year-old's conduct was inexcusable.
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Serena Williams shouts at the umpire
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