All-time best: (2) '99 Comets vs. (3) '02 Sparks

As the WNBA turns 10 this season, ESPN.com needs your help.

We've done the hard work and seeded each former WNBA champ. Now it's your turn to determine the greatest championship team in the league's history. Yes, we know each past championship squad was special. But which one is the best of the best? Which one stands out above the rest?

Let the debate continue. Vote now on the semifinal matchups, then check back Wednesday afternoon for the championship pairing.

Nancy Lieberman, an ESPN analyst and Hall of Famer, is a regular contributor to ESPN.com. Contact her at www.nancylieberman.com. Melanie Jackson coordinates ESPN.com's women's basketball coverage.