Sean Longstaff has now revealed what had frustrated Newcastle United the most during their first half of their game against Sunderland yesterday. Newcastle thrashed their biggest opponents 3-0 in the FA Cup third round, but it wasn’t completely smooth sailing in the opening 45 minutes. Speaking to NUFCTV, Longstaff shared how important the first goal was as they were at risk of getting a little nervous after dominating the game but having nothing to show for it. Longstaff says the first goal was ‘massive’ for NewcastleNewcastle had absolutely dominated the game from start to finish, but there …