At the US Open, Del Potro defeated Henri Laaksonen, Adrián Menéndez-Maceiras and Roberto Bautista Agut in straight sets, putting his best year performance to date against Bautista Agut. He began his fourth round match against Dominic Thiem greatly struggling, falling two sets behind. However, he then raised his level and, with the help of the crowd, he eventually prevailed in five sets, including saving two match points in the fourth set with two aces. In the post match interview he admitted he considered retiring from the match during the second set.