Southampton midfielder Oriol Romeu says Claude Puel's squad management has been key to their recent fine form.
Saints are unbeaten in their last six games in all competitions following Sunday's 0-0 draw at champions Leicester and have not conceded since a 2-1 defeat at Arsenal on September 10.
Manager Puel has made changes to his side throughout their unbeaten run as Southampton cope with the demands of the Premier League, the EFL Cup and the Europa League.
Romeu told the Daily Echo: "I think that we are doing well because the coach is being clever. We make five or six changes from the last game and that's what we have to do this year because we are in more competitions.
"So far we are proving we have a large enough squad with the quality to do these kind of rotations, so we are going to stick to it. He works tactically a lot and that comes out with those clean-sheets that we just got in the last five or six games."
Southampton are currently 10th in the Premier League table but Romeu thinks there is more improvement to come under Puel's guidance.
He added: "With Claude we are still learning, we are still improving but so far it is very good.
"We like to play this style. We like to have the ball. We like the team managing the game and willing to be clever with the ball."