Jordan Rapana has nailed two field goals to lead the Raiders to a dramatic 26-25 victory over the Dolphins in the second period of golden point in Redcliffe.

However, Dolphins coach Wayne Bennett railed against "all the mistakes" that went against his team during the latter stages of an absorbing contest.

The two sides scored four tries each in a thrilling contest at Dolphins Stadium, before Jamayne Isaako nailed a field goal with eight minutes to go.

Rapana, who had never scored a field goal in his 208-game NRL career before Saturday, then stepped up for the Raiders to send the game to golden point.

"Jordan, he's an unbelievable competitor," Raiders coach Ricky Stuart said.

"He's just a warrior. I love coaching him. He's the hardest man in the world to coach, but the boys love playing with him."

Some desperate defence from the Raiders — and a controversial penalty for blocking — held the Dolphins out throughout a dramatic first period of extra time.

Isaako had one field goal chalked off after Max Plath was pinged for blocking, a second deflected wide by Joe Tapine, and Rapana made a desperate tackle to deny Isaiya Katoa a try.

Rapana missed a field goal attempt in the first period of extra time, but made no mistake with his second effort to send the Raiders faithful home happy.

However, Bennett was far from pleased, questioning why the Dolphins field goal was chalked off when the Raiders' was allowed to stand.

"You'll have to wain until Monday when Graham Annesley gives his report about all the mistakes they made," Bennett said in his press conference.

"The Joe Tapane [incident] at the end, was that any worse than what Max Plath did [at the play the ball]?

"I've got two players knocked out tonight. No reports. No penalties. Both were head highs, they both had to go off the field.

"Connelly got knocked there with a pretty forceful head high … and there was no action taken there, and there was the other one with Herbie Farnworth. No action was taken.

"Both times they get sent by the doctor in The Bunker for head assessments because they were hit in the head.

"My players need some answers. That's the only satisfaction we'll get."

Earlier, the Dragons overcame a 10-0 first-half deficit to beat the Panthers thanks to four second-half tries in soaking conditions in Penrith.

The Panthers, without five Origin stars and the injured Nathan Cleary, were 10-0 up at the break thanks to tries to Paul Alamoti and 19-year-old Jesse McLean.

However, the Dragons, without three of their own Origin stars, powered back into contention in a blistering second period that completely turned the tables on the three-time defending premiers.

Right from the restart, winger Sione Finau made a stunning break, and the Dragons fed off his start to score four unanswered tries.

Toby Couchman, Tyrell Sloan, Mathew Feagai and Raymond Faitala-Mariner all crossed to blitz past Penrith at a sodden Panthers stadium.

Kyle Flanagan confirmed his father, coach Shane Flanagan, gave the team a hefty spray at half time, with Shane adding later that journalists did not what to know what he said at half-time.

"It wasn't pretty, was it?" he said, looking at a nervously-laughing Jack de Belin.