West Ham United manager Sam Allardyce has said that he is annoyed that his side had a goal disallowed during their 2-1 defeat to Arsenal on Sunday.

With the score goalless, Alex Song hit a low volley into the bottom corner of the net from 20 yards.

However, Diafra Sakho was penalised for standing in an offside position in front of goal, despite not touching the ball.

Following the game, Allardyce told the BBC: "The biggest shock was us not being in front at half time. We scored a perfectly good goal that was disallowed. It certainly should not have been disallowed on the basis of what Mike Riley and his staff tell us. The officials clearly got it horribly wrong and to say we are bitterly disappointed and frustrated is an understatement. Baffled is more the feeling.

"They said the attacker was in the eye line of the goalkeeper. Complete nonsense. When officials make these decisions they are supposed to have a clear view. It is impossible for the assistant referee to say that. They are wrong, Sakho is not in the eye line of the goalkeeper.

"Neil Swarbrick could only guess he might be in front of the goalkeeper. Sakho is running away from goal and lets the ball through his legs. 99 out of 100 are given as a goal this year. I am totally and utterly confused."

Next up for West Ham is a game against West Bromwich Albion on New Year's Day.