Who is Jordan Baker and what has Nick heard about her?

Daisy's longtime friend, Jordan Baker is a professional golfer who cheated in order to win her first tournament. Jordan is extremely cynical, with a masculine, icy demeanor that Nick initially finds compelling. The two become briefly involved, but Jordan rejects him on the grounds that he is as corrupt and decadent as she is.

From the text:

"I knew now why her face was familiar — its pleasing contemptuous expression had looked out at me from many rotogravure pictures of the sporting life at Asheville and Hot Springs and Palm Beach. I had heard some story of her too, a critical, unpleasant story, but what it was I had forgotten long ago."