Which Nike signature shoe line saw its sales drop by approximately 40% after its athlete endorser became embroiled in a major scandal in 2009?

Professional athlete endorsements can be extremely valuable for sports brands, but they can also backfire dramatically. When an athlete's reputation suffers, their endorsed products may face serious consequences. This poll tests your knowledge about one of the most significant product endorsement controversies in sports history.

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Tiger Woods' Nike Golf shoes
Michael Vick's Nike Zoom Vick V
Lance Armstrong's Nike LIVESTRONG collection
Oscar Pistorius' Nike Vapor Carbon Elite