Alexis Sanchez opened the scoring against his former club, Romelu Lukaku reprised the right-wing role he found success at for his country at the World Cup this summer, and Manchester United eased by Arsenal in the FA Cup 4th round by a 3-1 scoreline.
Arsenal’s injury woes deepened as Sokratis came down from an aerial challenge awkwardly on his ankle inside the opening 20 minutes, and while he tried to stay on after lengthy treatment, he was eventually forced off, replaced by Shkodran Mustafi.
After the forced change, Manchester United seemed to hold much of the meaningful possession, and the visitors took advantage of an Arsenal mistake at the back. Lukaku received the ball at the top of the box, and no fewer than four Arsenal defenders stepped to challenge him on the ball. That left acres of space behind the stepping defenders, which Sanchez filled with a perfectly timed run, allowing Lukaku to feed him with a through-ball
Just moments later, Manchester United struck with the second barrel, as Jesse Lingard doubled the lead. On the break, Laurent Koscielny attempted to catch Lukaku offside down the right flank, but his trap was late and it sprung the Belgian down the wing. Triggering a three-on-two break, Lukaku cut across to Lingard standing all alone at the penalty spot, and the England international finished cooly for a 2-0 lead.
Arsenal found a way back just before halftime as Aaron Ramsey barged into the United box and tapped across the face of goal. The ball was out of reach of Alexandre Lacazette, but Pierre-Emerick Aubameyang was on hand at the far post to poke it in past Sergio Romero. Just seconds after the break, Arsenal nearly equalized but Aaron Ramsey’s header was acrobatically tipped over the bar by a great Romero save.
Past the hour mark, as Arsenal pushed hard for an equalizer, the Gunners lost yet another defender as Koscielny went down and required lengthy treatment before coming off. Ole Gunner Solskjaer made tactical changes of his own for the stretch run, taking off Lukaku and Sanchez in favor of Marcus Rashford and Anthony Martial.
Manchester United weathered the storm and put the game away in the 82nd minute on the break. Paul Pogba picked Arsenal’s pocket in the middle third and broke at pace the other direction. Despite a pair of options open on either flank, Pogba shot on Petr Cech‘s net, with the Czech parrying the effort. He pushed it right into the path of Martial, and the substitute bagged the decisive goal.
The match nearly boiled over in the final minutes as Sead Kolasinac and Marcus Rashford went head-to-head, but neither did enough to earn a sending-off, with both given yellows. After a lengthy stoppage time, the win for Manchester United gave Solskjaer his eighth win in succession across all competitions to start his Red Devils tenure. For Arsenal, after winning the FA Cup two years ago, they’ve not been eliminated early in each of the last two seasons, falling last year in the 3rd round to Nottingham Forest, with this year’s defeat coming in the 4th round.