Building a Baseball Team Through Free Agents Versus Homegrown Talent
There are generally three ways of bringing new players into a baseball organization: trades, free agency, and amateur signings, either through the draft or international free agent market. There isn’t necessarily a “best” way, as successful teams are built using a wide variety of methods. The table below shows WAR totals for the first half of the season split into the three categories above, along with waivers and Rule 5 picks, which constitute a very small portion of the total:

As the chart shows, homegrown talent and players acquired through trade come out pretty far ahead of free agency. In terms of the sheer number of players, there are over 400 in each of the homegrown and trade sections, with around 300 in free agency. As for the impact, it’s hard to argue with the importance of homegrown players when looking at the graph above. Breaking the homegrown section down, we can see how each team has done this season with players they’ve drafted or signed internationally and then developed in their organization:
