Rivalries in MLB are as old as the sport itself.
Rivalries exist in every sport, and oftentimes provide many of the great highlights of the year.
In college football, Ohio State-Michigan, Army-Navy, Alabama-Auburn and Harvard-Yale are just a few examples of the greatest rivalries in the sport.
The Los Angeles Lakers and Boston Celtics have had a long-standing rivalry dating back six decades in the NBA.
The Montreal Canadiens and Boston Bruins are almost always sure to produce a thrilling night on the ice each time they play.
Here are the best rivalries to watch out for in Major League Baseball in 2013.