Brad Arthur has lashed his side as "embarrassing" and questioned their desire following their disastrous 30-4 NRL thumping at the hands of Newcastle on Saturday.
The Eels' season hit a new low when Mitchell Moses suffered a suspected MCL tear in his left knee and Will Smith went down with a hamstring injury in their meek five-tries-to-one defeat at ANZ Stadium.
In front of a lowly crowd of 7719, the Eels' night started in dire fashion when fullback Bevan French was taken from the field with a concussion in just the second minute.
The Eels ended the game without a fit player on the bench after French's replacement Smith and Peni Terepo (concussion) left the field late in the second half.
However Arthur refused to accept injury as an excuse as the the last-placed Eels suffered their fifth straight loss.
"That's embarrassing," Arthur said.
"We're not proud of that performance, we're not proud of ourselves, we've let people down tonight. We let our club down, our fans.
"The biggest people we've let down is ourselves. We've embarrassed ourselves."
Asked what his side was lacking, Arthur said: "We need more want and desire."
After Newcastle opened up a 6-0 lead through Jack Cogger off a Moses fumble, the Eels' injury crisis worsened when the Eels halfback was assisted from the field in the 25th minute.
Moses injured his left knee after being twisted awkwardly in a tackle by Daniel Saifiti and how now looks set for a stint on the sidelines.
With veteran forwards Beau Scott and Tony Williams already out for the year with torn ACLs, another serious injury is the last thing Arthur's side needs.
When Eels centre Michael Jennings was sin-binned for a professional foul on Lachlan Fitzgibbon, the Knights capitalised with Sione Mata'utia diving over to make it 14-0 at the halftime break.
Jennings was lucky not to be cited for tripping while Tepai Moeroa will be scrutinised by the match review committee after being put on report for a shoulder charge on Chris Heighington.
The Knights came into the game on a four-game losing streak and low on confidence after being flogged 48-10 by Cronulla last week.
However they dusted themselves off to record their biggest win of the season, spearheaded by prop Saifiti.
Saifiti, who finished the game with 171 metres from 19 runs and 15 tackles, capped off a stellar night with a barge-over try in the 55th minute and a bone-rattling try-saver on Terepo.
"He was outstanding," Knights coach Nathan Brown said of Saifiti.
"The Gold Coast drop may have been a lightbulb moment for Daniel Saifiti.
"He played tonight the way I expect him to play."