If mere athletic talent sold product, kids would be lining up for Tim Duncan's shoes, since he is the best player in the NBA. But it doesn't. It takes a combination of extraordinary athletic accomplishment and charisma to push a brand over the top. Three such athletes, Amanda Beard, LeBron James and Tiger Woods, are front and center in this week's news.

Two are at the peak of their pulling power. LeBron James (Nike, NYSE: NKE, Coca-Cola's (NYSE: KO) Powerade) fresh from an astonishing game five of the NBA Eastern conference playoffs, is dominating the sports page, if not the San Antonio Spurs. The Cleveland franchise has gained $185 million in value since his signing, and the $90 million he received from Nike seems like a bargain now. When his contract expires in 2008, he could demand -- $250 million? $500 million? It is possible, by the end of the career, he could be the first $1 billion athlete?

If Tiger doesn't beat him to it. Beginning tomorrow, Tiger Woods (Nike, Buick, General Motors, NYSE:GM) starts his pursuit of the 2007 U.S. Open. He's inked a 5-year, $40 million deal with Nike, and $25 million from Buick. Unlike LeBron, Tiger can look forward to another 30 years of playing, with lots of green jackets and green cash to come.

It seems like it happens every couple years. The promoters of major league soccer have finally found the secret ingredient needed to give soccer mass appeal as a spectator sport in the United States -- some advertising promotion, strategic partnership, or, in this case, the high-profile signing pf real Madrid soccer star/Posh Spice's Hubby/The Original Metrosexual, David Beckham. At 31 years of age, the British midfielder is already on the downside of his playing career, and there are a bunch of reasons this gimmick won't work:

1. The only people in the United States (other than die-hard soccer fans who, presumably, already watch MLS) who care about David Beckham are celebrity gossip followers -- and these people are unlikely to become MLS fans because of David Beckham. Sure, they might go to one game out of curiosity, or buy a poster of him -- but this will not translate into success for Major League Soccer as a whole.

2. The 18- to 35-year-old football, hockey, and baseball fans that soccer really would need to attract to become a viable spectator sport just don't care about professional soccer, or David Beckham. They might buy a copy of Maxim with Victoria Beckham on the cover, but they don't really care about David. If anything, a lot of men hate him for being so classy and good-looking.

3, This blatant PR gimmick runs the risk of alienating the few core soccer fans MLS can count on by turning their sport into a media circus. Think of Shooter McGavin in Happy Gilmore.

The Wall Street Journal points out numerous endorsement deals and media buzz that the league has generated in the wake of the Beckham signing. But I'll be surprised if anyone cares in a few years. Wasn't Freddy Adu supposed to generate lasting interest in soccer?