Clyde Drexler ain't been on the job for a week as BIG3 commish -- and he's already makin' history -- hiring the 1st ever female as head coach of a men's pro basketball team ... TMZ Sports has learned.
"The Glide" tapped Nancy Lieberman -- a member of the Naismith and Women's Basketball Hall of Fame -- to coach Power, the squad he previously coached before leaving to run the league.
Lieberman -- a legend for her hoopin' on the court -- isn't a novice to coaching either. She was an assistant coach with the Sacramento Kings ... and was the head coach of a WNBA team from '98 to '00.
N.L. isn't goin' to be coaching bums ... she's got former NBA stars Corey Maggette and Cuttino Mobley in her starting lineup.
Ice Cube -- the leagues co-founder is behind the move -- saying, "She was a helluva player and she's a helluva coach. Nancy's a winner and I expect her to win in this league."
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