Claude Puel believes Southampton's 3-0 victory over Sparta Praha showed the strength of his squad.
The Saints boss made seven changes to his team for the Europa League match, but watched as they cruised to victory at St Mary's.
With such a busy schedule this season, Puel stressed the importance of having a full squad of players capable of performing when called upon.
"It's very interesting, because we changed the team a little bit for the start of this game, and I am happy for all the squad, because they can see many good players," he told Southampton's official YouTube channel.
"It was, I think, important to improve and to build for the future. With a game every three days, it will be very important.
"It's important to give chances to all the players. We have young, international players and it is interesting to see them in these conditions and they produced a very good game tonight, and this shows we can travel for the future.
"But, for now, it is important to stay concentrated on the next game against Swansea, which will be very difficult, because the players must play another game after just two days off following this game."