Actually, starting pitchers impact basically the same amount of plays as a position player in the course of a season (obviously this varies...a first baseman will be involved in more plays than an outfielder, for example). In a given game, a position player will likely have 4-5 plate appearances, plus a handful of defensive opportunities. In a given game, a starting pitcher may face upwards of 30-35 batters. They are involved in each of their team's defensive plays. They obviously appear in just 1/5 of their team's games, but the workload they put forth in each start is usually 5x more than that of a position player (sometimes more, sometimes less). As a case study, I will compare Jacoby Ellsbury with Justin Verlander. I chose Ellsbury because he was one of the leading MVP candidates, and he appeared in basically every Red Sox game (158 of them), so he matches up pretty well with Verlander, who didn't miss any time due to injuries or whatnot. Ellsbury in 2011: 729 plate appearances, 394 defensive chances in CF. A total of 1123 "plays" Verlander in 2011: 969 plate-appearances-against (as a pitcher), 50 defensive chances, 4 plate appearances as a batter. A total of 1023 "plays". Obviously, this isn't an exact science and it doesn't take certain things into account, such as base running and position value. Obviously, an outfielder like Ellsbury will see way fewer defensive chances than a first baseman (Ryan Howard played 152 games this season and had almost 1400 chances). But hopefully this sort of debunks that myth that a pitcher isn't deserving of this award because they only appear in 30 games. Position players do indeed impact a higher percentage of total team plays, but it is really quite close, and in this case I think the MVP votes for Verlander were certainly warranted