Byung-Hyun Kim (born January 19, 1979 in Kwangsan-Ku Songjungdong, South Korea) a.k.a BK is a free agent right-handed pitcher in Major League Baseball. Previously, he played for the Arizona Diamondbacks (1999-2003, 2007), Boston Red Sox (2003-2005), Colorado Rockies (2005-2007), and Florida Marlins (2007).