MLB May Implement Security Changes at Stadiums After Bombings Print article Send a Tip from AP 24 Apr 2013 post a comment (AP) MLB likely to discuss security after bombings NEW YORK Stadium operations officials from the 30 big league baseball teams will meet this week and are expected to discuss whether to make any security changes in the wake of the Boston Marathon bombings. Major League Baseball said the meeting Thursday in New York was planned before the attacks last week. Among the security topics that could be discussed are backpacks that fans bring into ballparks. Each team has different policies for fans, although the general major league limitation on bag sizes is 16 inches by 16 inches by 8 inches. Teams might talk about whether they want to cut that down from the size of a standard school backpack to something such as a laptop carrying bag.