Left: F/Nazca Saatchi & Saatchi's image, released to the press last week. "Corra" is "Run" in Portuguese.
Right: Anna Echiverri's image, created more than three years ago by her and and her creative partner Annie Chiu. It is very widely known amongst ad creatives, and has often incorrectly been cited as real Nike work.
Echiverri works at SapientNitro here in New York. (Update: she now is at Arnold in Boston.)
Care to comment, Nike?