Watch: Tearful Keys withdraws injured after being on brink of win over Paolini

Watch as a tearful Madison Keys is forced to retire in the deciding set of her round of 16 match against Jasmine Paolini.

The American was forced to stop with the score locked at 6-3 6-7 (6-8) 5-5 on Court One.

Keys appeared to pick up the injury when serving for victory at 5-2 in the final set.

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