Arsenal finally kept an away clean sheet for the first time this season as they beat 10-man Watford 1-0 on Monday night.
The Gunners haven't been impressive on the road of late, and a trip to Vicarage Road looked tricky, against a buoyant Hornets side following their FA Cup semi-final success.
Watford's cause was damaged even further just moments later, as forward Troy Deeney was given a straight red card for appearing to strike Arsenal midfielder Lucas Torreira.
Despite their numerical advantage, Arsenal were far from impressive, labouring to a 1-0 win against 10 men, and they were almost hit with a sucker punch as Adam Masina's long-range strike smashed the crossbar for Watford.
Arsenal managed to get out of Hertfordshire with all three points, meaning they move back into the top four, one point behind Tottenham Hotspur once again.
Spurs fans will have been frustrated at Arsenal's somewhat fortuitous win anyway, but they were particularly furious with Watford goalkeeper Foster for his mistake.
Tottenham supporters took to Twitter to share their bemusement at Foster flopping against Arsenal, given that he's always playing the game of his life against Spurs, believing he's unbeatable against Tottenham but useless against everybody else...
Strange how good Foster is when he’s playing against Spurs yet against Arsenal .— John Hueston (@johnrhueston) April 15, 2019
Typical that Ben Foster plays like Neuer against Spurs and Jamie Theakston in Soccer Aid against Arsenal #WATARS— Lee Smith (@LeeSmith2000) April 15, 2019
Ben Foster against Spurs plays like Gordon Banks.— SouthStandSpurs (@SouthStandSpurs) April 15, 2019
Ben Foster against Arsenal plays like Jeff Banks.
Yet when he plays Spurs, Ben Foster turns into Superman https://t.co/XV1qXZJOVj— Glen Naylor (@Glen_Naylor) April 15, 2019
Ben Foster vs Spurs = Unbeatable— Dan Holdaway (@DanielHoldaway1) April 15, 2019
Ben Foster vs Everone else = useless
So typical, Ben Foster ‘always’ plays a blinder v Spurs ... And then chooses to drop a clanger v pesky goons. And it gets worse #RED— Allison Jane Smith (@AllisonJaneSmi2) April 15, 2019
Ben Foster loves bantering off Spurs— Bardi (@BardiTFC) April 15, 2019
Foster really is the bane of Spurs— Mike (@THFCMikey) April 15, 2019
Ben Foster becomes prime Yashin against Spurs but he gifts arsenal a goal ffs— Hugo (Fan) (@HugoTHFC) April 15, 2019
Ben Foster really hates Spurs man.— James White (@WhiteJ183) April 15, 2019
Ben Foster is a world beater against us— Kate (@KateCSpurs) April 15, 2019