大阪巨蛋
On July 20, 2012, at the Osaka Dome, Lee won the NPB Home-run Derby against Wladimir Balentien of the Tokyo Yakult Swallows. He belted 6 home runs while Balentien made no home runs. He was rewarded with 500,000 yen ($6,400). He ended his season with a .286 average, 24 home runs, and 91 RBI.