Brighton boss Graham Potter was left frustrated after their defeat to West Brom.
Pascal Gross and Danny Welbeck both struck the woodwork from the penalty spot and skipper Lewis Dunk had a free kick controversially disallowed in the first half.
“It's a sore afternoon for us," he said. “We only have ourselves to blame. We had other chances in open play as well as the two penalties, but it's very much a game that has got away from us and that's very frustrating. It's been a very painful week, after what happened today and in the Crystal Palace game."
Potter admitted he was confused by referee Lee Mason's decision to initially award Dunk's goal then change his mind before VAR Simon Hooper intervened and ruled it out.
"As far as I know, Lewis was told he could take the free kick quickly and put the ball in the net. In between that there was another whistle but I don't know what that was for so it would be nice to get more clarification. We will try and get clarification but there is nothing we can do about it now."
Including the missed penalties, Albion had 20 shots and six on target but could not find a way past man of the match Sam Johnstone.
Potter added, “We're not the only teams to miss penalties so we need to improve because you're not going to get two better chances. We pushed and pushed and had other opportunities."