Recently, Jessica DeLine wrote a great piece showing that the Angels ranked near the bottom of the American League in On Base Percentage at a number of positions, most notably first and third bases. Here is a graph Jessica created that shows the dearth of the situation:
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The need to improve On Base Percentage from these two areas, and pinch hitting is glaring. Even league average OBP would provide substantially more scoring opportunities and keep the roster turning over so Mike Trout, Shohei Ohtani and Justin Upton get more plate appearances.