Sloane Stephens has acknowledged how difficult it is to become a professional tennis player and wants to use her platform to help young people break into the sport.The 2017 US Open champion expressed her gratitude to the sport for providing her with opportunities that she wouldn’t have had otherwise, such as meeting presidents and travelling the world.Stephens has enjoyed a very successful career, bagging one Grand Slam and seven WTA singles titles along the way, and has been ranked as high as No. 3 in the world.Stephens launched the Sloane Stephens Foundation in 2013 when she was just 20 years old and the foundation has helped approximately 10,000 studen …