The Reds gave a disjointed appearance in the first half but took the lead with the final kick before half-time when Andriy Voronin's long-range effort found the net.

But the Premier League side were much improved after the break as a brace by young Hungarian striker Krisztian Nemeth and a goal each by Albert Riera by Fernando Torres sealed an emphatic win.

"Normally during the pre-season, you can see the team getting fitter each week. In this case, we have been in Asia for one week and it was really good," said Benitez just before the team jetted back to Europe.

"Today, you could see that the team was stronger and fitter. Especially in the second half, when our opponents were a little bit more tired, we could play much better and we had more opportunities.

"We still have three more games before we start the season against Tottenham so there's still plenty of time to decide on the team. The Spanish internationals and (Andrea) Dossena came in late as well so they will need some time to be ready."

Benitez was especially pleased with the performance shown by 20-year-old Nemeth who is in strong contention for a spot in the first team after coming off the bench to score twice in the Lion City.

"He was really good two years ago for the reserve team, scoring a lot of goals but last year he had some problems with injuries," said Benitez of the prodigious Hungarian striker.

"But he showed today that he's a good finisher and a player with a future.

"It depends on the players always. If they're knocking on the door and they knock really hard, then I have to hear. This is important and it depends on them."

The Liverpool boss refused to be drawn on whether the Singapore match marked Xabi Alonso's last appearance for the club.

The Spain midfielder came on with 13 minutes remaining for his first pre-season appearance and helped to begin the move that led to Torres' goal.

However, Benitez felt that the question of whether the 27-year-old would stay or leave for Real Madrid had to be addressed to the player himself.

"It's a question that you have to ask him," he said.

"Honestly, we've been talking about this for two months but I think that it is a question for him and not for us.

"He has three years on his contract and we know he is a great player - that's why we signed him and renewed his contract. So you have to ask him."

Benitez insisted that he will be leaving Asia with happy memories.

"The fans have been amazing and it felt for us like we were back at Anfield," he said.

"People here have been treating us with a lot of respect and you can see the passion. Sometimes you say it's too far (to travel to Asia) and you have one week away from your families but you can see the faces of the fans and you feel good to be out here.

"When you've got fans saying that they've been waiting eight years to see you, you have to be pleased to be here."

Such is the passion for the club in Asia that Benitez believes his side will enjoy a significant advantage if the Premier League ever manages to get its plan to play a 39th game in the region off the ground.

"We normally play around 60 games a year so if were to play more game, it would have to be organised properly. But it's not our decision - the coaches and managers have to prepare the teams so it depends on other people.

"But if we have to play with these fans behind us all the time, it will be like playing at home."