David Hyde O'Brien (born June 13, 1941) is a former American football tackle, defensive tackle, and guard who played college football for Boston College and professional football for the Minnesota Vikings (1963–1964), New York Giants (1965), and St. Louis Cardinals (1966–1967).
A native of Cambridge, Massachusetts, O'Brien attended Watertown High School and then played college football as a tackle for Boston College from 1959 to 1962.
He played professional football for the Minnesota Vikings (1963–1964), New York Giants (1965), and St. Louis Cardinals (1966–1967).
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