Career
He was drafted by the San Francisco Giants in the 3rd round of the 2006 MLB Draft and remained in their system through 2011 when he was released and signed as a minor league free agent with the Cincinnati Reds. Tanner returned to the Giants on a minor league contract in 2012 and played in American Automobile Association for the Fresno Grizzlies. He played for the Australian national baseball team in the 2013 World Baseball Classic.
On 14 March 2013, he signed a minor league contract with the Baltimore Orioles but was released soon after.