Halle Open
In the lead up to Wimbledon, Nishikori lost to Karen Khachanov in the 2nd round at the Halle Open. Entering Wimbledon with continued injury woes, expectations were low for Nishikori to make a deep run. He beat Christian Harrison and Bernard Tomic before upsetting Nick Kyrgios in the 3rd round. In the 4th round, despite facing some elbow pain, Nishikori came from a set down to beat Ernests Gulbis, reaching the quarterfinals of Wimbledon for the first time. Thus, Nishikori had succeeded in reaching the quarterfinals of every grand slam event. In the quarterfinals, he lost to eventual champion Novak Djokovic in four sets.