The trio had their say on Twitter after the Saints thumped Newcastle United at St Mary's on Saturday.
Ronald Koeman (@RonaldKoeman) September 13, 2014
Compare and contrast Saturday's Premier League clash at St Mary's.
Southampton, worthy 4-0 victors, were all smiles on Twitter after the game. By contrast, Newcastle United, the humiliated losing side, were practically silent on social media thereafter.
And who can blame Magpies players for keeping quiet? By the same token, who can blame the Saints for expressing their joy to the online world?
Manager Ronald Koeman was the first to tweet, declaring himself 'proud' of his team after a 'fantastic' 4-0 victory. Too right.
Summer wantaway Morgan Schneiderlin was next - and the Frenchman, who scored Southampton's fourth, seems a lot happier at St Mary's than he was a few weeks ago.
He congratulated the team on a good performance and thanked the fans for their support.
Well done to the team today for a good performance and a great résult ! And thanks to the fans for this amazing support— Morgan Schneiderlin (@SchneiderlinMo4) September 13, 2014
Finally, Ryan Bertrand, who is on loan at Southampton from Chelsea, took to Twitter with the slogan 'teamwork makes the dream work.'
The 25-year-old is now looking ahead to his side's next Premier League clash, when they travel to Swansea City next weekend.
Southampton sit a remarkable fourth in the league standings after four games, having won twice and drawn once, while they only just lost out to Liverpool on the opening day of the season.
It seems Koeman, then, has simply picked up where Mauricio Pochettino left off, despite losing several of his best players this summer. An exciting campaign awaits.