He was competing with two very good defensive catchers. Compared the the defensive bar of Vazquez and Leon he was moved off the position. The Twins have a lower defensive bar at the catcher position. Similarly Brian Harper came up with good defensive veterans like Tony Pena, Joe Ferguson, Edd Ott and Bob Boone in Pittsburgh and California. As a young catcher his defense didn’t match up. He was moved off catcher with Pittsburgh, failed to hit and ran out of options. The Twins gave him another shot at catcher. Though his defense never compared to Pena the Twins didn’t have a Pena in front of him. He was probably pretty close to average but moving off as a young player set his reputation.