Philadelphia Phillies catcher Carlos Ruiz led the Phillies in batting average, on-base percentage and intentional walks in 2010, while finishing second on the team in OPS+ and third in doubles.
San Francisco Giants catcher Buster Posey also led the Giants in batting average, while finishing third in RBI, home runs, on-base percentage, slugging percentage, OPS and OPS+.
In games in which Ruiz appeared for the Phillies, they were 31 games over .500, in a season in which they finished 32 games over .500 overall.
In games in which Posey appeared for the Giants, the team finished 16 games over .500, in a season in which their final record was 22 games over .500.
Posey's catcher's ERA was 3.18, on a team with an overall ERA of 3.36.
Ruiz's catcher's ERA was 3.31, on a team with an overall ERA of 3.68.
The success of these two teams is directly dependent upon the success of their catchers.