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Calvin O'Neal (LB) was traded on May 31, 1979, when the Baltimore Ravens sent Calvin O'Neal to the Tampa Bay Buccaneers.
The Buccaneers acquired linebacker Calvin O'Neal from the Colts for a 1980 twelfth-round pick.
Calvin O'Neal has been traded once in his NFL career: May 31, 1979: Baltimore Ravens → Tampa Bay Buccaneers.
Based on his trade history: Baltimore Ravens, Tampa Bay Buccaneers.
To acquire Calvin O'Neal on May 31, 1979, the Tampa Bay Buccaneers sent 1980 12th-round pick No. 326 (originally TB) — became Gene Coleman to the Baltimore Ravens.
May 31, 1979: Baltimore Ravens → Tampa Bay Buccaneers.