Alan Shearer was left furious about one element of Newcastle United’s performance in their 1-0 defeat to Brighton. Newcastle United missed a golden opportunity to beat Brighton and apply pressure on the Premier League’s top four on Saturday afternoon. Premier LeagueDanny Welbeck scored the only goal of the game at St James’ Park to inflict Newcastle’s second defeat of the season. The Magpies have now slumped down to eighth in the Premier League table and have gone four league games without a win. READ MORE: Newcastle United target Tyler Dibling replies to Lewis Miley’s 12-word message after re…