Roger Federer vs Novak Djokovic In Cincinnati Final 2015.
Roger Federer stepped deep inside the service box to attack second service. Djokovic mentally messed up by Federer and gave away a service game in second set with 3 double fault. https://www.youtube.com/watch?v=lyDLlEsDKWg

Now this new shot is named SABR - Sneaky Attack By Roger.