Striker Chido Obi-Martin could not contain his delight after scoring a hat-trick to fire Manchester United to a 5-1 win over Chelsea in the FA Youth Cup on Wednesday night.. United progressed to the quarter-finals of the competition at Leigh Sports Village with a convincing come-from-behind win over the nine-time winners, booking a clash with Arsenal next month.. After falling behind with 21 minutes on the clock via an effort from Reggie Walsh, United responded just five minutes later when Obi-Martin latched onto a long ball forward and lifted it over the goalkeeper to net what was an impressive finish.. United turned the game on its head in next to no time, taking a 3-1 lead into the break via a James Scanlon double. The contest was put beyond all doubt just five minutes after the restart when Obi-Martin scored his second and United’s fourth, tapping in Gabriele Biancheri’s low centre after Chelsea made a hash of playing the ball out from the back. The Dane completed his hat-trick 14 minutes later, bundling the ball in after Chelsea failed to deal with a free-kick.. Undoubtedly the star of the show, the youngster took to Instagram following the full-time whistle to celebrate the result and his treble, posting three celebratory images, including one of him holding the matchball.. He posted: “Proud of this team. Next round. Hatty.”. Instagram. Obi-Martin, who was replaced by the returning Shea Lacey with just under 10 minutes remaining, has seven goals in just three FA Youth Cup appearances this season, following the braces he netted in the earlier rounds against Preston North End and Coventry City.. Since arriving from Arsenal, the 17-year-old has scored 12 times in just nine appearances across the FA Youth Cup and the Under-18s Premier League.