Jack Sock holds the championship trophy after Milos Raonic, of Canada withdrew from the tournament before the final match at the 2017 Delray Beach Open, Sunday, Feb. 26, 2017, in Delray Beach, Fla. (AP Photo/Joel Auerbach)
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Jack Sock holds the championship trophy after Milos Raonic, of Canada withdrew from the tournament before the final match at the 2017 Delray Beach Open, Sunday, Feb. 26, 2017, in Delray Beach, Fla. (AP Photo/Joel Auerbach)
