The two players to reach the finals of the WTA Miami Open 2016 were Djokovic…

The correct answer is Lawn Tennis. Novak Djokovic and Kei Nishikori are world-renowned professional tennis players who compete on the ATP Tour. The Miami Open is a major tournament held in Key Biscayne, Florida, and it is part of the ATP Masters 1000 series for men's tennis. Although the question incorrectly refers to it as a WTA event (which is for women), both players are male tennis stars who have reached the finals of this prestigious tournament. Squash, Table Tennis, and Badminton are different racquet sports with distinct rules and governing bodies. Since Djokovic and Nishikori are famous for their achievements in tennis, including multiple Grand Slam titles, Lawn Tennis is the only correct option among those listed.