Major League Baseball executive vice president Rob Manfred has been named the league's chief operating officer, according to Brian Costa of the Wall Street Journal (on Twitter). Major League Baseball has officially announced that commissioner Bud Selig appointed Manfred to the position (Twitter link), leading many to speculate that Manfred is being groomed as his successor. Selig officially announced last week that he would retire following the 2014 season.
Manfred had been serving as one of five EVPs for Major League Baseball, dealing specifically with labor relations and human resources. Until this point, he has been responsible for the relationship between Major League Baseball's teams and the MLBPA. Manfred graduated magna cum laude from Harvard Law School in 1983 and has been an integral cog in negotiating baseball's collective bargaining agreement. More information on his background can be found in his MLB.com biography.