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Danielle Collins Pictures
HONOLULU, HI - DECEMBER 28: (l-r) Danielle Collins of the United States, Christian Harrison of the United States, Sam Querrey of the Unites States and Yanina Wickmayer of Belgium pose for a photo after playing a mixed-doubles exhibition match at the Hawaii Tennis Open at the Stan Sheriff Center on December 28, 2019 in Honolulu, Hawaii. (Photo by Darryl Oumi/Getty Images)