Doug Spreen

Doug Spreen is one of the official trainers for the ATP (Association of Tennis Professionals) and has worked with the world's top tennis players, including Pete Sampras, Andre Agassi and Andy Roddick. He is responsible for the health of the players, deals with their injuries before and after competition, and tends to them while they are competing. Spreen often has to run onto the court and check on athletes who are injured during play.