Chris Bosh's BABYMOMMA sues him
 

Miami Heat superstar Chris Bosh has been sued by his baby mama -- for allegedly torpedoing her deal to join the cast of "Basketball Wives" ... AFTER she signed her contract ... TMZ has learned. Bosh's ex -- Allison Mathis -- filed the lawsuit in Orlando, FL earlier this week ... in which she claims she signed a deal with show producers which could have scored her more than $250,000 for at least 4 seasons ... but Chris screwed it up. TMZ