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A free online baseball game that combines fantasy baseball and baseball card collecting.
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Attention BETA TESTERS! All Beta accounts have been removed. Please sign up again for a permanent Baseball Boss account.

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asking for much) and let's get to the serious stuff.

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© 2007-2008 Challenge Games. Baseball Boss, Baseballboss.com, the Baseball Boss logo, Challenge Games and challengegames.com are trademarks of Challenge Online Games, Inc
Privacy Policy Terms of Use Attribution

Official Licensee, MLB Advanced Media, L.P.
Major League Baseball trademarks and copyrights are used with the permission of the MLB Advanced Media, L.P.
Major League Baseball Players Alumni Association trademarks and copyrights are used with the permission of the Major League Baseball Players Alumni Association and Major League Alumni Marketing, Inc.

Challenge
Games

Check out the expanded lineup of Baseball Boss bundles - Superstar packs, Challenge Coins, Memberships and more - shop now.

Sign Up For The Big Leagues!

This is the place to sign up and play ball! Fill in all the required information (we aren't asking for much) and let's get to the serious stuff.

Already have an account? Sign in

This is the place to sign up and play ball! Fill in all the required information (we aren't
asking for much) and let's get to the serious stuff.