If you are an athlete or sports enthusiast, you know that every second counts. To find that 1-2% improvement that can make the difference between 1st and 5th place, sport biomechanists use science to investigate sports techniques and equipment, seeking ways to improve athlete performance and reduce injury risk. In essence, they want athletes to train smarter, not harder. At the U.S. Olympic Training Center (OTC), Bill Sands is the Head of Sport Biomechanics and Engineering, which is responsible for the service and research needs of 45 sports. Helping Olympic athletes defeat their opponents and achieve their dreams is a high-pressure job, but Sands steps up to the plate with his lifelong passion for science and sport. In this article, Sands describes a sport biomechanist's job and the background needed. How he chose this field and his advice for students are also presented.