Sevilla coach Unai Emery believes his team will have to play the "perfect match" to upset Atletico Madrid on Sunday.
Diego Simeone's high-flying Atletico side slipped to third in the Liga table after Real Madrid's 5-0 win over Real Betis.
Atletico's game in hand is at home to Sevilla and Emery has acknowledged the size of the challenge facing his team.
