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Bill Gregory (DE) was traded on Aug 28, 1978, when the Dallas Cowboys sent Bill Gregory to the Seattle Seahawks.
The Cowboys acquired defensive end Bill Gregory and Dallas' 1979 third-round pick from the Seahawks for Seattle's 1979 third- and sixth-round picks.
Bill Gregory has been traded once in his NFL career: Aug 28, 1978: Dallas Cowboys → Seattle Seahawks.
Based on his trade history: Dallas Cowboys, Seattle Seahawks.
To acquire Bill Gregory on Aug 28, 1978, the Seattle Seahawks sent 1979 3rd-round pick No. 57 (originally SEA) — became Michael Jackson; 1979 6th-round pick (originally SEA) (unverified) to the Dallas Cowboys.
Aug 28, 1978: Dallas Cowboys → Seattle Seahawks.