It was only his sixth appearance for the Magpies, with the Dutch striker showing glimpses of promise and perhaps even outshining the lacklustre Papiss Cisse.
But it was another goalless display nonetheless - in a game that Newcastle lost through a solitary goal against the bottom side in the Premier League.
In any normal case, you might argue that the 23-year-old simply needs time to gel and get accustomed to his new surroundings at St James' Park. But can the excuses really be made when De Jong has now not scored in 20 games?
|Papiss Demba Cissé||Newcastle||FW||1||18||928|
|Luuk de Jong||Newcastle||FW||0||6||391|
What is a striker's job, if not to score goals?
De Jong, who joined Newcastle on loan in January after a barren spell at Borussia Monchengladbach, has not scored in six for the Magpies. As Opta stats show, reserve striker Sammy Ameobi has only fared marginally worse, having failed to score in nine.
And if the 23-year-old keeps not scoring - what on earth would the justification be for spending £6 million on bringing him to St James' Park on a permanent deal?
"Of course, that is what I want," De Jong said only this weekend.
"I want to show myself in the Premier League and Newcastle is a fantastic club, and it would be great for me to sign a long contract here."
But, if Loic Remy - as expected - leaves the club at the end of the season, Newcastle will have Yoan Gouffran as their only half-reliable source of goals.
Yohan Cabaye is long gone, while Papiss Cisse only has one to his name all season. Any new striker, then, needs to be a clinical, prolific goalscorer who can slot in straight away and win games for the Magpies.
No matter what De Jong has offered outside of the penalty area so far in his time on Tyneside, however, he has not proven to be clinical or prolific. The 23-year-old should certainly be given until the end of the season but, on current evidence, bringing him to St James' Park on a permanent deal just wouldn't make sense.
Why reward a striker for not scoring any goals?
Should Newcastle sign De Jong on a permanent deal?