Year: 1980s

Yes, we do know who you can blame for one of the many reasons baseball is so incredibly slow. Looking for a bridge from his starter to top reliever Dennis Eckersley, Oakland A's manager Tony La Russa began to toy with the idea of matching up a relief pitcher with one specific hitter in the late 1980s. Righty vs. righty and lefty vs. lefty had not been a thing until that point, but now it has become one of the scourges of the modern game. The teams undoubtedly love it too, because they can sell that much more of everything to restless fans and viewers at home during the innumerable pitching changes every single game.