When the U.S. Olympic track and field trials open in Eugene, Ore., Friday, keep this in mind: Winning doesn't matter. Making the top three and punching a ticket to Beijing does.

The big American track stars of 2007 -- Tyson Gay (100 and 200 meters), Jeremy Wariner (400) and Bernard Lagat (1,500 and 5,000) -- should make it through the rounds and qualify without problems. All are having solid seasons after piling up gold in last year's World Championships at Osaka, Japan.

In addition to the Big Three, keep an eye on these five men (we'll preview the women's field on Friday):