LONDON, Aug 19 (Reuters) - Tottenham Hotspur's new manager Ange Postecoglou celebrated his first home game in charge with a 2-0 victory over Manchester United on Saturday, thanks to Pape Matar Sarr's maiden Premier League goal and a late own goal by Lisandro Martinez. Both sides were denied by the woodwork in a free-flowing contest and United's Bruno Fernandes wasted a glorious opportunity but Postecoglou's Tottenham deserved the three points for a vibrant second-half display. Both sides were denied by the woodwork in a free-flowing contest and United's Bruno Fernandes wasted a glorious opportunity but Postecoglou's Tottenham deserved the three points for a vibrant second-half display