Eddie Nketiah came off the bench to score the winner as Arsenal snatch a 2-1 victory over a drastically-improved West Ham at the Emirates Stadium.
The Hammers were unrecognisable from the side that succumbed to Newcastle on the opening day, producing a display packed full of endeavour and energy to stifle the Gunners for large parts.
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Arsenal took the lead against the run of play on 25 minutes when Alexandre Lacazette powerfully headed Pierre-Emerick Aubameyang’s cross home, but it was cancelled out on the stroke of half-time by Michail Antonio.
The Hammers looked set to go on to win the game in a dominant second-half display, with Antonio crashing a header against the crossbar, but Nketiah struck with five minutes remaining to make it two wins from two for the Gunners and leave West Ham pointless.