Preview: Easier for big clubs in Spain's Copa del Rey third round

MADRID, Jan. 5 (Xinhua) -- The four teams who will contest the Spanish Supercup in Saudi Arabia next week play their first matches as the Copa del Rey knockout competition reaches its third round this weekend.

The unique system used in Spain means that cup holders Real Madrid, FC Barcelona, Atletico Madrid and Osasuna also face the lowest category teams left in the tournament, while the remaining ties see the lo