LeBron James is king of Week 1

Updated: May 3, 2010, 10:10 PM ET

Welcome to the first edition of our "Cross-Sport Power Rankings" on ESPN.com.

Every Tuesday, we will present our ranking of the best, hottest and most intriguing professional athletes across all sports. Will LeBron James beat Jimmie Johnson? Will both of them beat Sidney Crosby? Where does Albert Pujols fall? Where is Roger Federer? Did Phil Mickelson make it this week? It's that kind of list.

To determine such a varied and deep list each week, we assembled an all-star cast of contributors from ESPN. Our panel includes: John Buccigross, Josh Elliott, Robert Flores, DJ Gallo, Jemele Hill, Dana Jacobson, Brian Kenny, Jeff MacGregor, Bram Weinstein and Trey Wingo.

Each week, the panel will assess performances by athletes from every sport and rank the top 20. We will combine the panel's rankings and share them with you on this page each week. We will keep track of the rising and falling stars as well as the occasional one-week wonders who will enter the firmament based on a memorable day at the park, on the course or at the track.

Bram Weinstein will sum up each week's ranking with a video to get the conversation started. Enter your comments below!

Visit "Cross-Sport Power Rankings" on Tuesdays on ESPN.com to see the latest rankings each week.