Minnesota Twins catcher Joe Mauer, rehabbing from back inflammation, remains on the disabled list but is making progress toward rejoining his teammates on the field.Mauer took batting practice and worked behind the plate Wednesday night, both firsts in his recovery from the back problems that have his sidelined. The batting and catching sessions took place at the Twins' minor-league camp in Florida.Mauer hit one ball out of the park in the batting practice session, which was his first sin...