LONDON — Judging from this year’s performances, Lolo Jones seems to have only a slim chance of winning an Olympic medal in the 100-meter hurdles and almost no possibility of winning gold.

Still, Jones has received far greater publicity than any other American track and field athlete competing in the London Games. This was based not on achievement but on her exotic beauty and on a sad and cynical marketing campaign. Essentially, Jones has decided she will be whatever anyone wants her to be — vixen, virgin, victim — to draw attention to herself and the many products she endorses.

Women have struggled for decades to be appreciated as athletes. For the first time at these Games, every competing nation has sent a female participant. But Jones is not assured enough with her hurdling or her compelling story of perseverance. So she has played into the persistent, demeaning notion that women are worthy as athletes only if they have sex appeal. And, too often, the news media have played right along with her.

In 2009, Jones posed nude for ESPN the Magazine. This year, she appeared on the cover of Outside magazine seeming to wear a bathing suit made of nothing but strategically placed ribbon. At the same time, she has proclaimed herself to be a 30-year-old virgin and a Christian. And oh, by the way, a big fan of Tim Tebow.