Tournament Challenge: Who do you like?

In 2010, 4.8 millions brackets were filled out on ESPN.com's Tournament Challenge. As of midnight ET, we're already at 700,000 and counting.

Here are the early returns:

Picked to win the national title:

1. Ohio State (25 percent)

2. Kansas (21 percent)

3. Duke (15 percent)

4. Connecticut (6 percent)

Pittsburgh (6 percent)

6. Notre Dame (4 percent)

North Carolina (4 percent)

8. Syracuse (2 percent)

Most popular title-game matchups:

Ohio State versus Kansas (23 percent)

Duke versus Kansas (16 percent)

Ohio State versus Pittsburgh (9 percent)

Connecticut versus Kansas (8 percent)

To fill out a bracket and find out more information on the Tournament Challenge, click here.