Alberto Cavasin feels his side were not ready for Sheffield United as Leyton Orient have not conceded six goals with no reply in 34 years.

A hat-trick from Harry Chapman and one a piece from Chris Basham, Kieron Freeman and Stefan Scougall saw Orient dismantled in the FA Cup first round.

Set pieces were once again their total downfall as four of the six goals the O's conceded came from free-kicks and corners.

Cavasin said: "It was a very bad performance. We were not ready for the situation.

"You can lose against a stronger opponent but conceding four goals from set pieces and not having an adequate reaction isn't a performance good enough for us."

Set pieces has been a problem for the O's for some time as when Ian Hendon was he charge he also noted how they struggled to defend them.

Cavasin has now lost five of his six games in charge and Orient need to get a good result on Tuesday as they face Brighton's Under-23s in the Checkatrade Trophy.

The 60-year-old was asked why set pieces were still a problem for his side and he said: "We do perfect training sessions during the week.

"The players work hard, follow, get ready and under this aspect you cannot ask more from them.

"And on Saturday's if it is not one thing, it is the other."

The Italian boss went onto say he kept the players inside the dressing room for some time to discuss their performance overall.

"Like last week (lost 2-0 to Crewe at Brisbane Road), the relationship among the team and among my staff are almost without a role," said the former Sampdoria boss.

"There is not a problem with confronting each other. The players are sad, sad.

"Basically they are saying what I said before, that all week we do really well and have good ideas.

"But when we concede a goal we do not react. This is almost becoming a habit.

"We said this to each other but it is up to us to believe and go past it. Do not lose ourselves in these moments.

"Do not take anything from the past, the supporters are here. But it is up to us it is us that are the main characters out there.

"The squad is made up of good men, good professionals. So we have to be the main characters of the next match.

"There is something more we have to do, something more on the pitch. But maybe the thing we have to do more of is to find some strength to get over this and get past the situation."