Claude Puel hailed the contribution of strikers Manolo Gabbiadini and Shane Long after the 4-0 win at Sunderland.
Gabbiadini followed up his debut goal against West Ham last week with two strikes in the first half at the Stadium of Light to put Saints in control.
He was substituted for Long during the second period, with his replacement netting the fourth, in added time, while his presence in the area also contributed significantly to Jason Denayer's own goal shortly beforehand.
"It's a good adaptation," said Puel of Gabbiadini, who has three goals after his first two games as a Saints player.
"I said this when he came in, he is a good, technical player. He gives quality to the team, because he doesn't lose the ball. We can find him between the lines, with good control, good passing.
"He can keep the ball and, after, he can give good solutions – good runs behind the defenders, and he has the ability to make the difference and to score. This is important for us, because since the beginning of the season we have had many chances, without being clinical, and this is important.
"I am happy also for Shane to score. All of this gives confidence to all the players, not just Gabbiadini."