William J. Heath Antonio (born August 15, 1975) is a Filipino-American former professional basketball player. He last played for the GlobalPort Batang Pier in the Philippine Basketball Association. A good three-point shooter, he was drafted 5th overall by the San Miguel Beermen in 1998. He was then sent to the Pop Cola 800s. He retired in 2007 to become a member of the coaching staff of the Coca-Cola Tigers. After working as an assistant coach for the Tigers, for 3 years, he returned to active play during the 2010 PBA Fiesta Conference.