MLB labor negotiations have been ongoing and reportedly fruitful, but maybe the biggest piece of news from them broke Saturday morning: ESPN's Buster Olney reports that multiple sources say a plan that would move a National League team to the American League, creating two 15-team leagues, is under consideration.

Olney further reports that one of the possible means of handling the restructuring of divisions in the event of 15-team leagues would be the elimination of divisions altogether. The 15 teams in each league would then compete for five playoff spots, as MLB would complete both realignment and playoff expansion in one seismic move.

Don't count on this happening immediately, though: Olney quotes a source who says the chances of this happening are "less than 50-50."

The last team to move from one league to another was the Milwaukee Brewers, who moved from the AL Central to the NL Central in 1998.