Wolves boss Mick McCarthy admitted his side did not deserve to beat Southend after Richard Stearman's goal in the last minute of extra-time earned them a 2-1 victory and a place in the Carling Cup third round.
Southend, who went into the tie at Molineux lying third-bottom of npower League Two, put in a battling performance and having fallen behind to Nenad Milijas' first-half penalty, deservedly equalised through Craig Easton in the 80th minute.
They held on for virtually the entire duration of extra-time and penalties looked to be on the cards, but Stearman had the final say at the death when he bundled Ronald Zubar's cross over the line, and McCarthy acknowledged the Barclays Premier League outfit had got lucky.
"We had to work hard for it, we didn't deserve it and it was certainly a cruel way for them to lose the game," McCarthy said.
"But I'm not bothered. Not about the result and the way that it happens, because there has been many a time where we have got punished like that.
"But I thought they were excellent and made us work very hard. It proves that players who are not playing regularly at competitive level need games. We have got away with that one, but they will all be better for it."