“MVR” isn’t an official or widely accepted statistic in baseball, so you won’t come across it in the usual Major League Baseball metrics. Sometimes, it’s used informally to refer to concepts like “Most Valuable Runner” or as a shorthand within teams, but its meaning can differ. Unlike stats like ERA or RBI, MVR isn’t something that’s tracked across the league. So, if you happen to see it, the context—whether it’s from a team, a broadcast, or a conversation—usually clarifies what it means.