 At Indian Wells, Duckworth qualified and defeated Dominic Thiem in round 1 before losing to Fernando Verdasco, as a result of his performance, he secured a top 100 ATP ranking for the first time in his career.Duckworth then qualified for the 2015 Miami Open and reached the second round where he again lost to Verdasco.He then returned to the challenger tour playing in San Luis, Anning and Bordeaux where he lost in the semi-finals, quarter-finals and second round respectively.