Dobbs batted .196 in 88 games with Philadelphia last year. He is a career .260 hitter with 31 homers and 64 pinch-hits in seven big league seasons.
Hill underwent elbow ligament replacement surgery for the second time in June 2009. He returned last September and went 1-2 with a 2.61 ERA in four late-season starts for Toronto.
Hill has a 9-18 record in 44 career starts with four teams.