Seriously? South Korea got to the semi final in 2002 on merit did they?
Just to remind you, in 2002 during a group game South Korea needed to draw at least, two Portugal players were sent off. In Korea’s second round game against Italy, the Italians got kicked off the park. Remember what Arsenal did to David Silva last April? Multiply that by 50 and then add the following - Francesco Totti was (completely wrongly) sent off for diving; Damiano Tommasi had a goal wrongly disallowed for offside; Choi Jin-cheul two-footed Gianluca Zambrotta and Kim Tae-young threw an elbow at Alessandro del Piero without even getting a yellow card. The Ecuadorean referee was investigated by FIFA but he was cleared, the verdict being that therefore were human errors and were not premeditated - that verdict being delivered by Sepp Blatter, of course.
Then in the quarter final against Spain, Korea benefited from two legitimate goals being wrongly disallowed by the Egyptian referee, before winning on penalties.
No corruption at the refereeing level? Do me a favour.