Phil Jagielka scored the only goal of the match as Everton recorded a 1-0 win over Arsenal in Sunday afternoon's Premier League clash at Goodison Park.
The victory is Everton's third in a row in the league, while Arsenal's poor away form has continued.
The Gunners remain fourth in the Premier League table, but they are vulnerable to fifth-placed Chelsea and sixth-placed Manchester United as the battle for the Champions League positions intensifies.
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Arsenal had a good chance to register in the first two minutes when Alexandre Lacazette broke into a dangerous position before feeding Mesut Ozil, but eventually Everton managed to clear their lines after a period of panic.
It was the home side that made the breakthrough in the 10th minute, though, and it came from a player who was not originally due to start.
Indeed, Jagielka was a late introduction after Michael Keane was taken ill ahead of kickoff and the experienced centre-back converted from close range after Arsenal had failed to deal with a corner kick.
Andre Gomes tried his luck for Everton in the 16th minute as the home side looked to double their advantage, but the on-loan midfielder's effort was always moving wide of the post.
The Gunners have still not kept a single away clean sheet in the Premier League this season and looked capable of shipping more goals at Goodison as the team in blue continued to throw players forward.
Idrissa Gueye was next to try his luck for Marco Silva's side in the 25th minute, but his strike was always moving wide of the Arsenal post.
Gylfi Sigurdsson then struck into the arms of Bernd Leno in the 37th minute after the Iceland international found all sorts of space in the gap between Arsenal's midfield and three centre-backs.
Gomes was running the show for the Toffees in the middle of the park, with Arsenal struggling to get hold of the ball and the two teams headed down the tunnel at the interval with Jagielka's goal the difference.
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Pierre-Emerick Aubameyang and Aaron Ramsey both came off the Arsenal bench at the break and the latter had a wonderful chance to level the scores early in the second period. Indeed, the ball fell for the Wales international in a dangerous position, but he somehow missed the target.
Ramsey had another shooting opportunity in the 52nd minute after finding space inside the Everton box, but his effort was wide of the post as the home side survived another dangerous moment.
Bernard had a golden chance to send the home side two goals ahead just before the hour mark, but Leno was on hand to make a smart save. Sigurdsson then had a shot deflected wide 20 minutes from time as Everton continued to threaten what would have been a huge second goal.
Henrikh Mkhitaryan swung one just wide of the Everton post in the 71st minute, before Leno kept out Sigurdsson's close-range attempt as the score stayed 1-0 to the Toffees.
Richarlison was next to come close for Silva's side as he struck wide of the post after an effort from Sigurdsson had deflected into the path of the Brazilian. Leno then denied Bernard from a promising position in the 81st minute.
The home side had so many chances late on as space continued to arrive on the break, but Arsenal could not find a goal in the five minutes of added time as Everton eased to a 1-0 success.
Next up for the Toffees is a trip to Fulham on Saturday, while Arsenal are in Europa League quarter-final action against Serie A side Napoli on Thursday night.
EVERTON (4-2-3-1): Pickford; Coleman, Jagielka, Zouma, Digne; Gueye, Gomes; Bernard (Lookman 88'), Sigurdsson (Davies 90'), Richarlison (Walcott 79'); Calvert-Lewin
ARSENAL (3-4-2-1): Leno, Mustafi, Sokratis, Monreal; Maitland-Niles, Elneny (Aubameyang 46'), Guendouzi, Kolasinac (Ramsey 46'); Ozil (Iwobi 74'), Lacazette, Mkhitaryan
