Orioles signed OF Antoan Richardson to a minor league contract. Richardson, 27, became a free agent after being outrighted off the Braves' 40-man roster last month. The speedy outfielder made his major league debut this past September, but spent the majority of the season with Double-A Mississippi, batting .283/.430/.327 with one home run, 21 RBI, 17 stolen bases and a .757 OPS over 353 plate appearances. He'll likely function as organizational depth.