Roughly once a week, at least one person in a FanGraphs chat asks about the site’s name. Why do we have “Graphs” in the name if we hardly ever use the graphs section of the site? Well, some of the graphs don’t get much attention but one of the most popular features of the site is a graph. A win expectancy graph, to be more precise. It looks like this!

Source: FanGraphs

These graphs communicate the odds that a team will win from any given point in the contest based on the inning, score, base-out state, and run environment. They tell the story of the game and the changes from one location on the graph to the next is the Win Probability Added of that plate appearance.

This is a long-winded way of saying that the Win Expectancy and Win Probability Added sections of the FanGraphs Library received a makeover this week and now include more detailed information about these two statistics.

As always, feel free to ask questions in the comments section, on Twitter @NeilWeinberg44, or during our weekly FanGraphs Q&A chats (Wednesdays at 3pm).