Inge, 35, was released by the Tigers on Thursday of this week after going just 2-for-20 in nine games this season, and cleared waivers at 2 PM this afternoon.
A career .234/.304/.387 hitter in part of 12 seasons with the Tigers, Inge was made largely redundant this offseason with Miguel Cabrera's move to third base.
The 2009 All-Star will likely split time at third base for the A's with Josh Donaldson, Eric Sogard and Luke Hughes, who have platooned at the position since Scott Sizemore went down with a torn ACL at the beginning of spring. The trio have hit a woeful .131/.170/.214 combined with just two home runs.
In the second year of a two-year, $11 million deal with the Tigers, the Athletics will only have to pay Inge the Major League minimum.