Declan Rice's header deep in stoppage time sealed an enthralling 4-3 victory for Arsenal at lowly Luton Town to send them five points clear at the top of the Premier League on Tuesday.
Arsenal had been knocked out of their stride by an energetic and direct Luton side and it looked as though they were about to extend their winless run at Kenilworth Road to 11 games.
But with six minutes of stoppage time played Rice found space to dispatch a header into the net.
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His last-gasp goal sparked unbridled joy for the visitors who have now won four league games in a row, but it was heartache for an intrepid Luton side who had twice come from behind to lead early in the second half.
Arsenal have now taken nine extra points this season courtesy of goals scored in the last five minutes of games.
"Luton are a top side and they can't be overlooked in this league for the quality they have," Rice said.