Mason Greenstein is the brainchild of Rent A Teenager. Currently a freshman at the University of Southern California, Mason started Rent A Teenager when he was 14 years old. He realized that he could use his tennis skills to teach younger children and offer these services at a fraction of the rate offered by a professional coach. As Mason started booking up, he realized that there was likely interest for lessons in other sports. He recruited some classmates and expanded his services to include soccer, lacrosse, basketball, you name it! This led to his website as a resource that provides responsible and talented teenagers to perform various jobs. His website soon reached social media pages, like Instagram and Facebook, where he expanded both his slew of customers and his audience. From this, the business quickly gained momentum.