The Minnesota Twins demoted shortstop Brian Dozier to Class AAA Rochester on Tuesday after their 8-4 loss to the Deroit Tigers. Dozier, who was hitting .234 and had made 15 errors in 83 games, had lost too much of his aggressiveness at the plate, assistant GM Rob Antony said. However, Antony added that if the Twins didn't think Dozier could still be their shortstop of the future, they would have left him in a utility role, rather than sending him down to work through his struggles. The Twins purchased the contract of Pedro Florimon from Rochester, where he had hit .251/.308/.344 with three homers and 27 RBI in 83 games. He batted .283/.347/.372 with two homers and eight RBI in 30 games for Class AA New Britain earlier this season. Florimon, 25, played in 10 major league games for the Baltimore Orioles last year, going 1-for-8 with two RBI.