Great escapes: Riske saves five match points to win 's-Hertogenbosch
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Jelena Ostapenko stormed back from a 1-5 third-set deficit, saving one match point at 2-5, to defeat local favorite Shelby Rogers 4-6, 6-3, 7-6(4) in the second round of Charleston (Volvo Car Open/Chris Smith)
Twenty-one players in 23 WTA Tour main draw matches this season have saved at least one match point and gone on to victory. Relive their Houdini-like triumphs here.