Radhi Jaïdi expressed his disappointment in the aftermath of Southampton Under-23s' loss to Wolves, after the home side had put themselves in a commanding first-half position.
Tyreke Johnson and Marcus Barnes fired Saints in to an early lead, before Wolverhampton's quality shone through in the second period, as they emerged 4-2 victors.
The visitors fielded an experienced XI, including various players with first-team and international pedigree; notably, three-goal striker Donovan Wilson.
"I'm not very happy with the way we lost tonight, it isn't at all acceptable, Jaïdi commented. "This is a situation where you are winning 2-0 and we're in control.
"We're speaking about managing the game, controlling it. We started to lose concentration and drift down to levels where we're conceding the play.
"We let them dictate in the second half and they ended up controlling the game. We made really cheap mistakes.
"We prepared for the [experienced] Wolves side, we knew that from the start. There is no excuse in that aspect, you have to step up to the level and match that.
"First 15 minutes we unsettled them, but for the rest of the game we allowed them to get organised. We gifted them goals, which gave them some hope."