And they were joined by Newcastle United's Kieron Dyer, as he attempts to recover from the knee ligament injury he sustained against Southampton on the final day of the Premiership season.
Now they are in Korea, the build-up to the summer showpiece begins in earnest.
After Tuesday's match against the Koreans, they play Cameroon next Sunday in a final warm-up game before the World Cup.
West Ham's Trevor Sinclair will remain with the squad on stand-by while Dyer's fitness is assessed.
And Eriksson will also be keeping a close eye on captain David Beckham as he continues his recovery from a broken foot.
Beckham has started to take part in very light training work-out, but has yet to kick a ball with the left foot he injured against Deportivo La Coruna in the Champions League.
The Manchester United star will take no part in the friendlies against South Korea and Cameroon, setting his sights on England's first World Cup game against Sweden on 2 June.