DOHA: Al Gharafa are aware of the challenge that awaits them on Saturday when they take on former champions Al Sadd in the quarterfinals of the Emir Cup. Al Gharafa coach Pedro Caixinha said on Thursday: "We respect our opponents. It will be a tough challenge for us. But my team can get a good result." He added: "Al Sadd have a great team and outstanding players like Xavi in their ranks. We will try not to give them chances to create goal-scoring opportunities." Caixinha said Al Gharafa must rise to the challenge. "The time has come to win big matches," Caixinha said on Thursday. "We have our own way of playing and we must beat Al Sadd to reach semi-finals. "The Al Gharafa fans are with us and we must do well for them," Caixinha said. Al Sadd coach Jesualdo Ferreira said: "This is an important stage of the tournament. We have the desire to win. We need the right kind focus and I believe my players are ready." He added: "Every game is different and every game needs different handling. We will be treating this game as the final." "Let the best team win," Ferreira said. " Al Sadd will play to win. We are ever so eager to defend the title we won last year," he said. Al Sadd player Musab Al-Khader said: "It will be a tough game for both teams. We wish to bring our A-game to the pitch. We are used to winning titles and we must work hard towards that goal."