I could swear this question was asked a week ago.
I believe the answer should be Willie Anderson (played for LA), with 336 yards against the Saints in '89. After some thread hopping, the date appears to be Nov 26, 1989.
Edit: Date Error
[b][url=http://www.fantasyfootballcafe.com/forums/viewtopic.php?t=224384]What happened to Evo?[/url][/b]