African champions Zambia came from behind to beat Germany 4-3 after extra-time and advance to the quarter-finals of the Under-20 World Cup in South Korea.

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Zambia looked like they had the match won at 3-1 in the 89th minute but late goals from Suat Serdar and Jonas Arweiler ensured the game went to extra time.

Shemmy Mayembe was the Zambian hero with a goal early in the second period of the added 30 minutes.