Slaven Bilic says he asked referee Paul Tierney to send off Ben Foster but admits he was wrong after reviewing the decision as West Ham drew with West Brom.
Foster avoided a red card in the second half after clattering Javier Hernandez as the Hammers failed to build on their first win of the campaign of five days earlier.
"I asked the referee to give a red card because I have seen a lot of times that being a red card," he told reporters. "But when I saw it again I can't blame the referee.
"First thing is Foster was not the last man. Two men were behind, [Jonny] Evans and [Ahmed] Hegazi - and the second thing is the challenge was mistimed and not brutal."
James Collins limped off late on for the Hammers and will need a scan on an ankle injury with a derby against Tottenham coming next Saturday.
He added: "We are going to scan it - it is an injury but what gives me hope is he continued after it happened in the first half."
It was a second consecutive clean sheet for the Hammers as they eased a little pressure on Bilic following their stuttering start and the manager was satisfied with his players' efforts.
"It wasn't a great game of football. To get more - the three points we were looking for - the quality in the last third was missing," he said.
"I have no complaints, it's been a good week for us. To have another clean sheet, to get a point away from home, you can't be too negative about it.
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