John Brenkus Hosts ESPN's GREATEST ATHLETE OF ALL TIME Today

"SportsCenter" and ESPN Sport Science teamed up to determine the greatest athlete of all time, using their unique metric that factors in attributes such as speed, power, reaction time and more. Your votes determined the athlete who would represent each sport in the bracket phase of the project and then Sport Science host John Brenkus delivered the results of each matchup, culminating in Bo Jackson overcoming Jim Brown to earn greatest athlete of all time honors. Tune in for a special Greatest Athlete of All Time broadcast today, March 10 (3:30 p.m. ET, ESPN).

"Previously, people would identify the best player or the person who had the biggest impact on their sport," host John Brenkus told TVGuide. "What we're analyzing are categories like quickness, agility, speed, strength, power, endurance, durability, performance under pressure. We're looking for the real athlete, not just the player."

To vote for your choice of Greatest Athlete of All Time, click here.

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