Last year, Mike Trout and Bryce Harper had two of the best seasons for age-19/age-20 players in baseball history. We might not ever see anything like Trout’s 2012 season from a 20-year-old again. Those two ruined our expectations for what underaged position players are supposed to do in the big leagues. Everyone else pales in comparison to what we just saw.
That shouldn’t cause us to overlook the fact that there’s another 20-year-old putting his mark on Major League Baseball right now. In Baltimore, Manny Machado is showing the early signs of being a superstar.