Sam Allardyce is looking to put things right on Tuesday night after two defensive errors cost his West Ham United side dear in Wales at the weekend.

Big Sam's side play host to Crewe Alexandra in the Capital One Cup second round on Tuesday evening and the manager is grateful that the opportunity to right the wrongs of the weekend has come around so quickly. Swansea City took full advantage of the Hammers' lapses at the back to steal a 3-0 win, a situation Allardyce is not keen to see repeated at the Boleyn Ground when the Railwaymen visit.

"In the end everyone that saw the game will know why we lost it," said Big Sam. "Two major errors made by our goalkeeper and our central defender are not things that are easy to come back from. I was really disappointed and we never really recovered from it.

"We've got to make sure that those kind of errors don't creep into our game again. Where we were so good at the back last week against Aston Villa we were dreadful this week. The Premier League is unforgiving and if you make those kind of errors you're going to get punished for them. We've now got a very important game against Crewe where we've got to try to bounce back before Fulham at home."

Although the scoreline was not what West Ham would have been hoping for from their first away game since their return to the Barclays Premier League, some heart can be taken from the promising debut of Matt Jarvis. The new No7 looked lively throughout and came close to setting up Kevin Nolan with a dangerous cross as early as the first minute.

"It's about us continuing to provide him with the kind of service he requires and when you give him that service he's exceptionally talented in the final third. The full-backs just couldn't stop him crossing the ball. When he drops the shoulder the full-back doesn't know if he's going to go left or right as he's equally as good with either foot.

"It's been a big week for the lad. He tired a bit towards the end as it's been such a busy week, but he'll only get better and better as he settles in with the players and gets to know them better."

With the Crewe game falling so quickly after the Swansea match, Big Sam is likely to shuffle his pack with several experienced players being offered the chance to gain some valuable match time. There could be first starts for the likes of Stephen Henderson, Modibo Maiga and Alou Diarra, with a couple of Academy graduates included as well to help aid their development

"We've got a hugely-experienced group of players to play on Tuesday night and that will provide an opportunity to get as many minutes for them as some of the other players. We've got new signings like Maiga and Diarra that we can give a game to too. They can play with people like Joey O'Brien, Nick Maynard and Ricardo Vaz Te, who could all feature. We'll have an experienced squad that should have enough to beat Crewe and get us through to the next round.

"Our priority is the Premier League as always, but what it does is offer the players who are disappointed about not playing is the chance to play in a very good competition. It tells me where they are and are they staking a claim to get in the first team to play as early as Fulham next week. I'm hoping the players make a statement to me on Tuesday that says I've got to play them in the first team against Fulham next week."

The transfer window closes on Friday evening and although West Ham have already bought in nine players since May, Big Sam is keeping an open mind about whether there will be any more arrivals.

"There is a lot to be said about the transfer window. Managers before me have often said that there is no need for a window or it needs to close before the start of the season. As time goes on I am beginning to think they are right. I see no reason why we could not attempt to do this on a trial period and see how it goes rather than set it in stone."

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