Under-23s boss Radhi Jaïdi was left to rue missed opportunities in the aftermath of Southampton's Premier League 2 defeat to Wolves at Molineux Stadium.
Saints surrendered the league's top spot as a consequence, and now need their Midlands rivals to slip up if they are to regain first place and automatic promotion to Division One.
Jaïdi, who made six changes to the side that beat Villarreal five days prior, was particularly disappointed with the three goals conceded, especially given that Saints drew level in the first period, and had plenty of chances to go ahead before Wolves regained the upper hand.
"Poor goals conceded at key times," Jaïdi summarised. "When we get ourselves level we created two really good chances to go in front, but then conceded a second before half time.
"It killed our expectation. The first half was key, and we threw away the opportunity to lead.
"We were always chasing the scoreline in the second half, to get something out of the game. There are a lot of aspects that we need to review.
"I had to make six changes tonight, which is something we had to deal with. Some individuals weren't at their best.
"The performance in general wasn't what we've come to expect. We're only losers for one day; tomorrow we bounce back and make this loss a lesson that we learn from."