Southampton Under-23s captain Alfie Jones felt that both the goals conceded against Sunderland could have been avoided.
Goals from Joel Asoro and Josh Maja saw the visitors secure a 2-0 victory at Staplewood, and Jones believes the early second-half strikes killed off the game.
“It was very disappointing,” he began.
“We started the first half well, were on top and moving the ball about. But in the second half we dropped off and gave away two sloppy goals.
“Two goals quickly together always kill the momentum, and when you go 2-0 down against a strong defensive team you know it is going to be a struggle.”
Saints will play their final fixture of 2016 a week on Wednesday, when they face off against Reading Under-23s in the Checkatrade Trophy.
And Jones is keen to use the match at St Mary’s to bounce back from the disappointing Sunderland result.
“We want to make it right,” he continued.
“We will debrief today’s game, get it out of the way and then look forward to Reading where we want to put in a better performance.
“The Checkatrade Trophy is obviously a big tournament against senior players and we want to go as far as we possibly can.
“The reward to go far and possibly play at Wembley is massive for us, but first we need to focus on the game coming up.”