There are currently nine Major League pitchers from Asia, born in either Japan, South Korea, or Taiwan.
Through the first five weeks of the 2013 season, those nine pitchers have combined to dominate opposing hitters. Those pitchers are Yu Darvish, Hyun-Jin Ryu, Hisashi Iwakuma, Hiroki Kuroda, Wei-Yin Chen, Junichi Tazawa, Koji Uehara, Kyuji Fujikawa and Hisanori Takahashi.
Dave Cameron of Fan Graphs has put the combined pitching line of those nine pitchers against that of Detroit's Justin Verlander from last season.
Click here: Maybe It's Time We Stop Underrating Pitchers From Asian Countries to view the comparable stats.