For Reality Sports Online players

Meet Chuck. Then beat him.

Prove It is the free prediction challenge hosted by Chuck — a 1970s game-show legend who never noticed the decade ended. New games every week, bigger games during the big events, and every pick graded against his.

60 seconds · Everything plays with the sound off

Your host

The host you came to beat.

Chuck asks the questions, locks his own answers, reacts to every pick, and tells you where the crowd stands. He has been undefeated since 1978.

“I've got the microphone. You've got the final word.”

— Chuck, every single week
Chuck, the Prove It host, holding a microphone
The games

Weekly games. Event games. Your games.

Every week

Weekly challenges

Yes-or-no picks on the week's loudest arguments, plus weekly MLB roster games. New games drop weekly and lock before the action starts.

See this week's games
The big ones

Event games

Golf majors with live leaders, wrestling's big nights, marquee matches. When the events everyone's watching arrive, they get their own games.

Browse live games
Public

Beat Chuck

Play the public games, outscore the host, and see where you rank against everyone playing. He's been undefeated since 1978 and he will bring it up.

Play a public game
Private

Beat your friends

Start a private game, send one link, and settle it inside your own group. Same questions, same lock — your crowd instead of the whole crowd.

Start a private game
Beat Chuck · GolfBeat Chuck · BaseballBeat Chuck · SoccerBeat Chuck · Wrestling
Three steps

How it works.

  1. 01

    Make your picks

    Every game is a short run of yes-or-no calls. Chuck locks his answers first, so you always know exactly who you're up against.

  2. 02

    Everything locks

    When the deadline hits, no edits and no hedging. Your picks against Chuck's, on the record.

  3. 03

    Scores post

    Every pick gets graded, question by question. Outscore the host, own the week, and climb the season standings.

Free to play

Sign up and make your first call.

Free to play. The only thing on the line is bragging rights — which, let's be honest, is everything.

Sign up free