Manager Paul Sturrock admitted he was in shock after Friday night’s 6-0 defeat against a Tottenham Hotspur XI at Roots Hall.
The Blues were given a footballing lesson by the Spurs reserve team in their final pre-season friendly.
Sturrock kept his side locked in the dressing room for half an hour post match and he hopes the result will prove the reality check needed ahead of next weeks season kick-off.
“I’m in shock,” Sturrock told the official website. “I have been in this game for 37 years now as a player, coach and manager and I have never lost 6-0 in my life so this is a new experience for me.
“That is though the best team we have played for a long, long time.
“They were absolutely magnificent and as a young squad a lot of them have a great career ahead of them.
“I’m gutted with the score and some of the performances and now some people will pay the penalty for that.”
The defeat rounds off an indifferent pre-season for the Blues that has seen them win four, lose five and draw one.
But despite the 6-0 thumping the Scot hopes it will prove a positive when the Capital One Cup and League Two season start next week.
“I do also feel it has been a difficult pre-season because of the types of teams we have brought here and played in the friendlies,” he admitted.
“Spain was fantastic for team spirit and bonding but those types of teams we are not going to meet in League Two.
“We have got to have a reality check and this is one.
“I have been in with the players for 30 minutes and this result will hopefully be a kick up the backside require to enable us to start the season properly.”
Southend next travel to Peterborough United on Tuesday evening in the first round of the Capital One Cup.