[2] On 23 June 2015, he announced his retirement from professional tennis at the end of the season, playing 2015 Stockholm Open as his last event.

[2] In April 2016, it was announced that Nieminen will compete in floorball in season 2016–2017 at Finnish Salibandyliiga representing SC Classic.

Fellow Scandinavian tennis player Robin Söderling was in attendance to pay tribute to Jarkko and the Finn was visibly moved as he gave his farewell speech.

[7] His final official match was against his old friend and rival Roger Federer at the Hartwall Arena, Helsinki on the ninth of November.

He won his singles tie with a so-called triple bagel with a victory over Courtney John Lock, making him the first player to win by such a scoreline at any tournament since 2011, and one of two players to accomplish the feat on that day (Emilio Gómez of Ecuador earned a triple-bagel victory over Adam Hornby of Barbados at Davis Cup competition elsewhere).