On June 18, Hardy was struck on the wrist by a 94 mph fastball from Cardinals pitcher Lance Lynn. It confirmed the next day that he had suffered a broken wrist and was placed on the 10-Day DL. He was moved to the 60-Day DL later in the year before returning to the Orioles in early September. He assumed the role of bench player after the emergence of Tim Beckham, who the Orioles had traded for earlier in the season. On September 24, the final home game of the year for the Orioles, Hardy collected two hits, including a homer, and received three standing ovations from the Orioles crowd in what was his last game as an Oriole at Camden Yards. On November 3, the Orioles declined Hardy's 2018 option.