The 16-time Grand Slam champions are first tennis players to endorse KT Tape.
Saturday's final will take place at the West Side Tennis Club in Forest Hills.
Life-changing year for the 2010 Wimbledon and US Open finalist.
Keys named ambassador for FearlesslyGirl.
The former world No. 1 pens a beautifully written ode to Olympic tennis.
The 14-time major champ will begin his 2017 campaign at the Brisbane International.
The future if American men's tennis is taking shape, they say.