Arsenal have now opened a 10-point gap between themselves and Manchester City, thanks to a 2-0 win over Everton on Saturday.
The Gunners left it late to win at the Emirates, with two late goals to seal a crucial three points.
Mikel Arteta’s men struggled to break down the visitors, and for a long time it appeared it would end goalless.
But the match turned on its head with the introduction of 16-year-old Max Dowman.
Dowman’s cross caused panic in Everton’s box, leaving Viktor Gyokeres with the simple task of tapping the ball into an empty net.
The teenager then ran the entire length of the pitch to score on the breakaway, as Arsenal hit the 70-point mark.