Former NFL running back Zac Stacy brutally attacked the mother of his child, punching her in the head before slamming her into a television as their 5-month-old son sat feet away … and the terrifying incident was captured on video.
TMZ Sports has learned … the disturbing altercation happened at 30-year-old Stacy’s ex-girlfriend’s home in Florida on Saturday.
We’re told Stacy became furious and aggressive with his ex during an argument … and that’s when video shows the former 5th-round pick swinging at her head before yanking her off a couch, tossing her across the room and into the TV.
The TV then falls on top of the woman as she tries to calm Stacy down … but he throws an object at her and storms into a corner.
Throughout the video, you can hear the woman begging Stacy to stop.
We’re told the woman called cops immediately after the altercation, but Stacy fled the scene before law enforcement was able to arrive.
We’re also told the woman applied for a restraining order for her and her son, but we have not yet confirmed that with police.
Stacy was drafted out of Vanderbilt by St. Louis in 2013 … and played 2 seasons for the Rams.
He joined the New York Jets in 2015 … and has been out of the league ever since.