Fulham 2-1 Arsenal - Highlights
Arsenal's Premier League title challenge suffered another blow in a 2-1 defeat at Fulham on Sunday, as Tottenham beat Bournemouth 3-1 to close in on their north London rivals.
The Gunners' high hopes of a first league title in 20 years have been rocked by two damaging defeats in four days.
Mikel Arteta was looking for a response after losing 2-0 at home to West Ham on Thursday but was left angered by what he described as his side's "worst performance of the season".
Arsenal remain in fourth, two points behind leaders Liverpool and level on 40 points with Manchester City, but having played a game more than both their title rivals.
"If we play like today we will be nowhere near. Today was a really difficult day to swallow," said Arteta on his side's title aspirations.
"It's a really sad day today because we didn't deserve to win the game."
Arsenal had started brightly at Craven Cottage as Bukayo Saka pounced to tap home his first goal in six games after Bernd Leno parried Gabriel Martinelli's initial effort.
But the visitors failed to build on their early advantage and Fulham hit back to snap a three-game losing run in the Premier League without even scoring a goal.
Raul Jimenez was badly missed during his three-game ban for a red card at Newcastle and the Mexican kickstarted the Fulham fightback with his fourth goal in as many games.
Former Arsenal winger Willian sent Tom Cairney free down the left and his dangerous low cross was swept home by Jimenez at the back post.
Fulham were the better side in the second half and they got their reward just before the hour mark.
Arsenal failed to clear a corner and the ball broke kindly for Bobby De Cordova-Reid to smash home from close range.
Only a fine save from David Raya to deny Cairney and the crossbar from Andreas Pereira's free-kick prevented Arsenal from suffering further punishment in the pouring rain in west London.
But enough damage may have been done to their title chances over the past week.