(LEAD) (U20 World Cup) S. Korea crash out with loss to Portugal

(ATTN: CHANGES top photo; ADDS details, comments)By Joo Kyung-don

CHEONAN, South Korea, May 30 (Yonhap) -- South Korea crashed out of the ongoing FIFA U-20 World Cup on Tuesday with a 3-1 loss to Portugal.

The hosts submitted lethargic effort in