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Preston Riley was traded on Apr 16, 1973, when the San Francisco 49ers sent Preston Riley to the New Orleans Saints.
The Saints acquired Preston Riley from the 49ers for a 1974 fourth-round pick.
Preston Riley has been traded once in his NFL career: Apr 16, 1973: San Francisco 49ers → New Orleans Saints.
Based on his trade history: San Francisco 49ers, New Orleans Saints.
To acquire Preston Riley on Apr 16, 1973, the New Orleans Saints sent 1974 4th-round pick (unverified) to the San Francisco 49ers.
Apr 16, 1973: San Francisco 49ers → New Orleans Saints.