 Pierre-Emerick Aubameyang's hat-trick helped Arsenal to welcome the first win of the season. They beat a young West Bromwich Albion side to reach the Carabao Cup third round. Aubameyang marked his first start of the season with two first half tap-ins and a curdling finish after the break. He also acrobatically set up Nicolas Pepe for the third with Bukai Osaka slotting in the Gunners fourth. Alexander Lacazette came off the bench to fire in his sixth, his sides sixth. The win could have been bigger too with Martin Ortegaard hitting the outside of the post from the tight angle and Pepe striking the bar with a chip.