Berger began his career with a semi-pro team in Pontiac, Michigan, in 1965 with the St. Petersburg Blazers of the North American Football League. The next year, the 6-foot-8 Berger played for the Orange County (Calif.) Ramblers of the Continental Football League before signing with the NFL's Los Angeles Rams. He joined the Patriots as a free agent in 1969 as the biggest lineman to ever suit up for the team.
Burger played in 41 games for the Boston/New England Patriots. His final season was with the Miami Dolphins in 1973.
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