Salt Lake City is viewed as a frontrunner to get an MLB expansion team, but if that happens what will the repercussions be?

The American League and National League have been a part of Major League Baseball for a great portion of its history, but expansion could risk their extinction.

When MLB expansion comes up, which cities will get new teams is always the first topic. But there's another factor that will impact the entire sport: How will MLB realign its divisions -- and structure its playoffs -- to accommodate those new franchises.