 Brantley went on to attend Columbia-Greene Community College, starred in soccer, basketball, and baseball, and still holds several school records.After one year at CGCC, he starred at Coastal Carolina University, and after his senior season, in 1983, was drafted by the Seattle Mariners in the second round (#30 overall).After 3+ successful years in the minors, he made his big league debut with the Seattle Mariners in .