Italy's Karin Knapp, left, is mobbed by teammates after defeating United States' Alison Riske 6-3, 7-5, during a Fed Cup world group tennis match on Sunday, Feb. 9, 2014, in Cleveland. (AP Photo/Tony Dejak)
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Italy's Karin Knapp, left, is mobbed by teammates after defeating United States' Alison Riske 6-3, 7-5, during a Fed Cup world group tennis match on Sunday, Feb. 9, 2014, in Cleveland. (AP Photo/Tony Dejak)
