Chevron has signed a three-year deal -- $4 million annually -- that makes it an official partner of the U.S. Golf Association. The sponsorship includes print, broadcast and digital media purchases. The agreement will use marquee events to promote education by showcasing the science and technology principles behind the game, Glenn Weckerlin, Chevron’s director of marketing, said. There will be learning stations to teach about the science of golf -- such as aerodynamics, velocity and lift of golf balls, and measuring the slope and acceleration of putting greens.