There were traditionally eight professional baseball teams in Korea, three of which are based in Seoul. The NC Dinos, a newly created team based in Changwon, joined the league in 2013, making nine teams in total. With the addition of this new team, the 2013 Korean Professional Baseball season was even more intense and exciting for the fans.
Teams are referred to by the name of their sponsors and not the city in which they play for example :Nexen Heroes (Seoul - Mokdong Baseball Stadium), LG Twins (Seoul - Jamsil Baseball Stadium), KIA Tigers (Gwangju - Gwangju Champions Field)