Aoki is one of only six players, alongside Ichiro Suzuki, Matt Murton, Alex Ramirez, Tsuyoshi Nishioka, and Shogo Akiyama, to amass 200 or more hits in a single season in Japanese professional baseball, and the only individual to do so in two separate seasons. He played in the 2006 and 2009 World Baseball Classics as well as the 2008 Beijing Olympics, and represented Japan in the 2017 World Baseball Classic.