Atlanta Braves General Manager John Coppolella has resigned from his position, effective immediately. The resignation comes as a result of a breach of Major League Baseball rules regarding the international player market.  
"Major League Baseball is investigating the matter with our full cooperation and support," said John Hart, Braves President of Baseball Operations. "We will not be issuing any further comment until the investigation is complete."
The organization will begin an immediate search for Coppolella's replacement and Hart will perform the GM duties until a replacement is named.