The NFL is mourning the loss of former linebacker Keith Browner Sr., who played for multiple teams — including the Tampa Bay Buccaneers, Buffalo Bills, Pittsburgh Steelers, Chicago Bears, Houston Texans, Denver Broncos, Kansas City Chiefs,

and Green Bay Packers — after he tragically passed away at the age of 63.

According to TMZ Sports, Browner died unexpectedly at his home in San Leandro, California

, on Tuesday morning. His son, Keith Browner Jr., shared that his father had experienced stomach pain and fatigue the night before and planned to visit the hospital the next morning. Sadly, he collapsed and passed away suddenly before he could receive medical help.

While the official cause of death has not been confirmed, reports indicate that his symptoms were consistent with a possible heart attack.

Browner was a standout linebacker at the

University of Southern California (USC) from 1981 to 1983, serving as team captain in his senior season. His leadership and relentless play earned him the Elmer C. “Gloomy Gus” Henderson Award

in 1982 for logging the most minutes on the field.

He was selected by the Tampa Bay Buccaneers with the 30th overall pick in the 1984 NFL Draft, launching a professional career that saw him suit up for seven different franchises. Known for his discipline and physical play, Browner became a respected figure in every locker room he joined.

After his NFL career, he continued to play for seven seasons in arena football, showcasing his enduring love for the sport.

Family members and former teammates described Browner as both a fierce competitor and a devoted father. He is survived by five children —

Keith Jr., Keicha, Amber, Ashley, and Jordan — who called his passing “sudden and devastating.”

His death comes just two days after the passing of another NFL legend, former Bengals tight end and broadcaster

Bob Trumpy, marking a somber week for the football world.

Keith Browner Sr. will be remembered as a warrior on the field and a pillar of strength off it — a man whose toughness, passion, and love for the game left a lasting impact across the NFL.