NSW State of Origin coach Laurie Daley will be sweating bullets on scans for Josh Dugan after the Blues certainty injured his elbow in St George Illawarra's loss to South Sydney on Friday.
The Dragons confirmed that Dugan hyperextended his elbow when Rabbitohs forward Paul Carter landed on Dugan's arm in an attempt to ground a loose ball inside the Dragons' in-goal midway through the second half.
The fullback stayed down momentarily before playing on and finishing out the NRL match, however, club medico Tony Ayoub said Dugan would be heading for scans on Friday.
"Josh has hyperextended his left elbow and has a slight strain to his medial ligament," Ayoub told the club's website post-match.
"It is very sore through the front of the elbow itself and he probably has a capsule strain, which we will look at on Friday.
"At the moment it is just so painful, it is hard to get a gauge on what he's actually done."
Daley is set to name his team on Monday for the series opener, with Dugan, Penrith star Matt Moylan and North Queensland custodian Lachlan Coote vying for the Blues No.1 jumper.
Dragons coach Paul McGregor tried to play down the concern after the game.
"He's wrapped up there in ice. He's a resilient bugger, he'll be back," he said.
While Dugan's status is up in the air, Blues hopeful Adam Reynolds posted an eye-catching final audition with a game-turning display in the 34-24 victory at ANZ Stadium.
The Rabbitohs No.7 set up three tries off his boot, and also kicked five goals from seven attempts.
Rabbitohs coach Michael Maguire said Reynolds' performances, which included a clutch conversion from the sideline against Parramatta last week, had been building since his return from a jaw injury in round seven.
"He's been great over the last few weeks, obviously came off the back of the jaw and he's starting to build his game now," he said.
"You can see the boys get a lot of confidence when he's up over the ad line and kicking like he is. He builds a lot of pressure on the opposition when he kicks the way he does."
Rabbitohs captain and Queensland star Greg Inglis said his teammate had peaked at the right time.
"Over the last month, Reyno's really lifted his game without a doubt," he said.
"I'm no selector and whatever NSW decide to do, that's what they've got to decide on.
"But I think Reyno moving forward is very capable of handling the Origin arena and the way he's handled himself over the past month after coming back from his injury, he's definitely one to keep an eye out for."
Origin I will be played at ANZ Stadium on June 1.