Newcastle United fans are concerned that the Dutchman's form seems to have permanently dipped.
Sunday was yet another day to forget for Newcastle United. Supporters boycotted their Premier League clash with Tottenham Hotspur en masse, Sunderland fans flew a mocking banner over St James' Park and John Carver's men lost once more.
This time it was a 3-1 defeat to Spurs but it doesn't appear to matter what the score is anymore - just the fact that Newcastle now seem to lose every single game (six defeats in a row).
And a particular subject of Newcastle fans' displeasure (aside from their off-field qualms with the club's owners, of course) on Sunday was Dutchman Tim Krul.
The goalkeeper was criticised for his performance against Tottenham and was at fault for two of the goals. But this was no one-off, according to Newcastle fans.
Indeed, supporters are worried that the 27-year-old has been off key for the Magpies for some time, with many even calling him the worst shot stopper in the top flight. Is the criticism harsh?
You can't blame Newcastle fans for expressing any displeasure these days, such is the bleak situation facing their team at the moment. Tottenham were the benefactors on Sunday.
Here, then, is what people are saying about Krul on Twitter after his performance v Spurs:
Krul at fault 1st 2 goals again. Starting to feel a bit sorry for the stick young Alnwick got. #nufc— the realist (@howay51) April 19, 2015
Krul beaten again.. Fazio doesn't punish him. What is Krul playing at? Shocking. #NUFC 1-2— NUFCfans.co.uk (@nufcfans) April 19, 2015
Anyone who defended Krul for the first goal just got proved wrong! Shocking #nufc— Leigh Carter (@leighsamagpie) April 19, 2015
Tim Krul, worst premiership keeper by a country mile! #nufc— Ralph C Kincade (@Tyronetemple) April 19, 2015