DEMI LOVATO
The Camp Rock cutie is competing on the blue team.

THE JONAS BROTHERS
The trash talk was "all day, every day," says Kevin (center, with Nick and Joe), who are all competing on different teams.

JASON DOLLEY
The Cory in the House star got goofy.

ANNA MARIA PEREZ DE TAGLE AND JASMINE RICHARDS
Once they left the field, the Camp Rock girls glammed it up.

SELENA GOMEZ
"I'm a huge sports girl," says the Wizards of Waverly Place star.

DYLAN AND COLE SPROUSE, MOISES ARIAS AND KYLE MASSEY
The twin stars of The Suite Life of Zack & Cody (far left and far right) jumped in with Hannah Montana's troublemaker (front) and the star of Cory in the House (in back).

MEAGHAN MARTIN
Camp Rock's mean girl showed off her funny face.