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Bukayo Saka played the lead role as the Gunners took control of the Premier League.
Bukayo Saka struck twice as Arsenal took a step closer to the Premier League title by beating Crystal Palace (NZT) 4-1 on Monday.
The Gunners are eight points ahead of current champions Manchester City, having played a game more.
Palace, who sacked manager Patrick Vieira this week, have seen their relegation concerns deepen after stretching the winless run to 13 games in all competitions.
Saka scored twice to set up the opener for Gabriel Martinelli to become the first Premier League player this season to record double figures for both goals and assists.
Granit Xhaka was also on the scoresheet.
Martinelli opened the scoring in the 28th minute after turning in a cross from Saka.
Saka added a second in the 43rd after collecting a pass from Ben White and finishing low past Palace goalkeeper Joe Whitworth.
Saka then saw an effort clear off the line as Arsenal started the second half in the same dominant fashion as they had started the first.
Xhaka made it 3-0 in the 55th after exchanging passes with Leandro Trossard and finishing from close range.
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LONDON, ENGLAND – MARCH 19: Crystal Palace interim manager Paddy McCarthy and his players cheer their fans after their side’s heavy loss to Arsenal.
Schlupp pulled one back for Palace in the 63rd, but all thoughts of an unlikely comeback were ended when Saka struck again in the 74th.
Palace are three points above the relegation zone, but fellow contenders Bournemouth, West Ham, Leicester, Nottingham Forest and Leeds still have games in hand.