Julian Alvarez's fine first-half strike handed Manchester City a hard-fought 1-0 win over Newcastle in their first home match since winning the treble.The World Cup winner curled a shot into the top corner after 31 minutes of a tight Premier League encounter at the Etihad Stadium and it proved enough for the champions to claim all three points.Newcastle, buoyed by thrashing Aston Villa 5-1 in their season opener last week, had travelled in hope of claiming their first league win at City for almost 23 years.Yet the hosts, despite making just two changes following their draining European Super Cup venture in Athens in midweek, were too strong and successfully nullified Eddie Howe’s side.Pep Guardiola’s men were far from their fluid best, but they produced a professional performance to follow up their opening win at Burnley and in Alvarez and Phil Foden they had the brightest players on the pitch.Newcastle fought to the end but it ultimately proved a frustrating night for the visitors, who had five players booked.City started slowly but began to step up the pressure midway through the first half and threatened for the first time when Manuel Akanji curled a long-range attempt over.Alvarez then whipped in a low cross but failed to find Erling Haaland before Mateo Kovacic and Foden both had efforts blocked.Foden grew into the game and was a lively presence, having stepped into the playmaking void left by long-term injury victim Kevin De Bruyne.Foden was instrumental in City’s goal, finding space and darting into the area before pulling back for Alvarez.The Argentinian then did the rest, picking his spot from the edge of the area and firing a shot beyond Nick Pope.Foden threatened to seize control of the game and was crudely