Newcastle have made a terrible start to the season, and they are still looking for their first win of the league campaign, with the Magpies currently propping up the table.
Krul insists that this is a false position, but the Dutch goalkeeper has been left crestfallen, after an injury he picked up while playing for Holland, will keep him out for the remainder of the campaign.
"I'm devastated the scan has confirmed my biggest fear, that I have torn my knee cruciate playing for Holland in the game against Kazakhstan last night," Krul said.
"My recovery and hard work starts now to fully recover.
"I'm devastated I can't play a part on the pitch to help the team turn this season around. I still believe this club can, and should, be up there with the top teams."
The loss of Krul is a huge blow to Newcastle's chances this season, as he was one of their most reliable players.
Newcastle will now be taking a risk whoever they put in goal, with none of their other options proven in the Premier League.
Newcastle signed Karl Darlow from Nottingham Forest in the summer, but he has never played above Championship level and is currently injured.
Rob Elliot is their other senior stopper, but he has looked suspect when called upon before, while the highly-rated Freddie Woodman is still only 18, and only has a handful of senior games to his name.