Arsenal came from behind to beat Chelsea 3-1 and go within one point of Premier League 2 Division 1 leaders Leicester City.
Kyle Scott put Chelsea ahead on 14 minutes at London Colney.
But Arsenal went into half-time ahead thanks to Eddie Nketiah's fierce close-range strike and Tyreece John-Jules' backheel goal.
Nketiah's goal against his former club was his 10th in the competition, one behind Division 1's leading goalscorer, Lukas Nmecha, of Manchester City.
A goal after the break from Reiss Nelson confirmed the win that sent Arsenal above Liverpool into second.
They will go top if they win their match in hand, at Liverpool, on 6 April.
Arsenal: 6 April v Liverpool (A) PL2
Chelsea: 31 Mar v Derby (A) PL2