International Basketball League (1999–2001) Tags: Basketball League, Sports League.The International Basketball League (IBL) was a short-lived professional men’s basketball league in the United States. The IBL was headquartered in Baltimore Maryland. The league started in 1999 and ended in 2001. country United States founding year 1999-01-01T00:00:00+02:00 team St._Louis_Swarm title International Basketball League (IBL) Learn more... Loading...