Loud crack comes before Jack Bostock's concerning injury during Dolphins clash
The Dolphins have suffered an awful injury blow after Jack Bostock suffered a suspected ACL injury, leaving the field assisted by medical staff.
In the 27th minute, Bostock ran the ball back from a kick against the Knights and fell before going into contact.
A loud crack could be heard as he went down as he immediately clutched at his knee, that was already strapped.
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"You could hear that," Steve Roach said on Fox League.
Caller Warren Smith added: "He is distraught, it was a non-contact injury."
Jack Bostock suffered a suspected knee injury against the Knights. FOX Sports
"It's a sad sight," he continued as Bostock was helped from the field.
The winger has scored nine tries across 12 matches this season.
It was a shaky start for his Dolphins side in Perth with Fletcher Sharpe scoring for the Knights inside four minutes.
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Jack Bostock leaves the field injured. Fox League
Kodi Nikorima hit back not long after but it was all the Knights for the next period of time with Bradman Best and new signing Dom Young crossing the line to make it 16-4.
Despite being down a man, the Dolphins were able to get back in touch when Connelly Lemuelu scored in the 32nd minute.
The first half ended with Newcastle leading 16-10.
The Knights went on to win 26-10.