Kyle Flanagan was discharged from the hospital at 2 am on Monday after a troubling head collision with teammate Hayden Buchanan during their game on Sunday night.
He was carried off the field on a stretcher, wearing a neck brace, and subsequently transported to the hospital via ambulance.
The club issued a statement early Monday, confirming that he had been cleared of any fractures.
"St George Illawarra Dragons five-eighth Kyle Flanagan has been cleared of any serious injury following scans at hospital overnight," they announced.
"Flanagan was taken to Gold Coast University Hospital as a precaution after sustaining a heavy concussion and potential neck injury. Thankfully, imaging has confirmed no structural damage."
"He will continue to be monitored by club medical staff under NRL concussion protocols regarding the return-to-play timeline and is travelling home with the team today."
This incident cast a pall over the Dragons' 22-14 defeat to the Gold Coast Titans, leaving the team still in search of its first win this season.
Adding to the emotional burden, Dragons coach Shane Flanagan had to lead his team while his son received treatment following the alarming collision.
After the match, he expressed deep concern about the seriousness of the situation.