Liverpool captain Steven Gerrard has been pleased with the side's performance level on their tour of the United States.
The Reds had a pretty productive tour which saw them reach the final of the Champions Cup in Miami, only to lose 3-1 to Manchester United in the final, where Gerrard suggested that their level had dropped off.
He told the Liverpool website: "The lads have been working hard and training well with all the work outs and the tests we have had the last couple of weeks. It will put us in good stead for the season, but of course it's still disappointing to finish the tour when you lose to Manchester United.
"We've been building and getting better as the games have gone on. For 55 minutes against United I thought we were very good, and then obviously we tired a lot and Manchester United made us pay.
"Second half aside [against United] the performance levels have been very high and playing better opposition in pre-season will certainly help us moving forward.
"But as a whole, the tour has been very positive and worthwhile. The lads are a lot fitter and sharper now and we will be ready for Southampton.
"The games we have played have been against high calibre opposition and have been a good test for the team."
Liverpool will be hoping they can play at a high level for 90 minutes going into the start of the season, and have one more friendly against Borussia Dortmund to prove they are nearing optimum fitness prior to their first game of the season against Southampton.
In addition, two difficult fixtures follow for the Reds and they will want to be in the best shape possible when they travel to champions Manchester City and to White Hart Lane to face Tottenham Hotspur. They're two games that Liverpool will want to play at a high intensity to give themselves the best chance of taking maximum points from both fixtures.
They came up against Man City on their pre-season tour - winning the game on penalties after a 2-2 draw in normal time - and will have hoped to have learned one or two things about their opponents for the second weekend of the season.
A good end to the pre-season on Sunday against Borussia Dortmund would give the Reds a decent degree of momentum going into the new campaign.