May

1-the NBA Admits the Dallas Mavericks brining the NBA to 23 teams(1980)

2- Bill Russell won his first NBA title as player-coach of the Celtics when Boston defeated the host Los Angeles Lakers 124-109 in Game 6 of the NBA Finals.(1968)
Utah Jazz point guard John Stockton decided to retire from basketball after playing 19 seasons in the NBA(2003)

5-Bill Russell and the Celtics end their run of 11 rings in 13 season.(1969)

12-The New York Knicks win the first ever NBA lottery pick. and select Patrick Ewing(1985)