1.  Kei Nishikori avenged his 2014 US Open loss by rallying from 1 set down vs. Marin Cilic to reach the DC final.  He then avenged a 2015 loss to Isner in Miami by rallying from 1 set down to take a 500 level title and reclaim some momentum.
   

   Kei Nishikori is hitting form at the right time ahead of the US Open… http://t.co/h0C7HFSnQD pic.twitter.com/grMOBx17Gq

   — ESPN.co.uk (@ESPNUK) August 9, 2015

2. Sloane Stephens won her first career title by winning Washington, DC.  Sloane got her footing on tour back at Roland Garros and has played solid tennis heading into Toronto.
3. Angelique Kerber won her 4th title of 2015.  Her major results have not reflected her renewed winning spirit, but my guess is a workable draw will emerge in the next 3 or 4 majors for Angelique and she will be in a slam semifinal again.
4. Phillipp Kohlschreiber won in Poland to end the clay court events prior to the US Open for 2015.

Kerber and Radwanska put on a great match for fans of tennis