I heard this said on MLB Network this offseason, and I never really considered the notion, but Posey is a more powerful hitter at first base.
Looking at his career, that hasn’t exactly been true. Based on his stats on Baseball Reference, he’s hit a home run every 28 at-bats while playing first base, compared to every 29 at-bats at catcher.
That’s not exactly a huge difference that warrants a full-time move to first base. But when you think about it, it does make sense that Posey would have more power if he played first base full-time.