Tottenham Hotspur slipped to defeat in the North London derby as they were once again undone by a set-piece. Gabriel Magalhaes’ header from Bukayo Saka’s corner in the second half proved to be the decisive moment in the derby as the Gunners recorded a third straight win at Tottenham Hotspur Stadium. Spurs again had the majority of possession and created 15 chances, however, they failed to covert their dominance in goals and caught out at a set piece. Tottenham have now made their worst start to a Premier League season in nine years having taken just four points from their first four matches. A…