Ex-NBA superstar Ben Wallace is now a FREE MAN ... after spending 16 hours behind bars for a hit-and-run accident back in February.
Wallace began his stint on Tuesday when he was sentenced to 2 days in the slammer for leaving the scene of an accident when he crashed his SUV through a fence in Virginia and fled on February 8th.
But after 16 grueling hours ... Wallace was released.
But Ben's time in lockup wasn't the shortest celebrity stint -- that honor would probably go to Nicole Richie ... who only spent 82 minutes in jail from a 2006 DUI.
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