Who was the KBO's one-year wonder?

It was Kim Sang-hyun in 2009, right?
A perennial prospect who was traded early in the season suddenly hit
over .300 with 30 home runs, 100 RBIs, and an OPS of 1.0 or higher,
winning the Triple Crown including the Home Run title, plus the Season MVP.
And he never came close to those stats again until he retired.