The Dolphins have suffered injuries to three of their key players as half Isaiya Katoa set up a 26-16 win over Wests Tigers at Suncorp Stadium.
The top-of-the-table Dolphins won their third game in a row for just the second time in their short history in front of 22,051 fans, but it came at great cost.
Dolphins second-rower Felise Kaufusi was ruled out of the match with a hamstring injury in the 28th minute and prop Thomas Flegler hurt his shoulder before exiting in the 63rd.
Worse was to follow when star centre Herbie Farnworth left the field with a suspected AC joint injury with five minutes remaining.
The injuries soured the Dolphins' triumph ahead of next Friday night's showdown with Brisbane.
Dolphins coach Wayne Bennett said the club didn't know the severity of the injuries just yet. He said both Flegler and Farnworth had suffered AC joint injuries, with the latter's the worse of the two.
"AC joints can be pretty bad if you've got a good one and I think (Farnworth) has got a good one. Sometimes you have to operate on them," Bennett said.
"The concern is whether we've got the replacements to do the job they've been doing. That's the issue."
Bennett said Flegler was a chance of playing against the Broncos.
Inspirational Tigers skipper Api Koroisau injured his quad in the warm-up. He strapped it up and took the field, but was replaced in the 35th minute before returning after the break.
The Tigers faced more adversity when they lost forwards John Bateman and Samuela Fainu either side of halftime to concussion.
Katoa, 20, kicked the Tigers to death with composure well beyond his years.
He started and finished a sweeping movement to score the opening try after winger Jack Bostock was set free by No.6 Kodi Nikorima.
The Dolphins defended multiple sets on their own tryline with vim and took their chance at the other end.
Veteran back-rower Kaufusi split the Tigers' defence open and found flying fullback Hamiso Tabuai-Fidow, who made it 14-0.
Kaufusi left the field immediately after making the bust.
The Tigers had their chances, with fullback Jahream Bula bursting through only to throw a forward pass to centre Justin Olam.
Errors in their own half cost the visitors against a Dolphins side that was relentless.
After the break the Tigers unleashed, with half Aidan Sezer and Koroisau in the thick of it.
Centre Solomona Faataape crashed over after excellent work by forward Isaiah Papali'i and winger Charlie Staines.
Sezer then threaded the needle with a perfectly placed grubber kick for Faataape to ground the ball with his torso and narrow the margin to four.
It was in the big moment that Katoa stepped up with a perfectly weighted grubber for Nikorima to score.
Hooker Jeremy Marshall-King then carved through the middle and found rampaging Kenny Bromwich to put the game out of reach.
Highly rated 18-year-old Tigers playmaker Latu Fainu made his debut off the bench for proud coach Benji Marshall.
"I spoke to the team about how resilient we were as a bunch," Marshall said.
"We didn't deserve to win, but at the same time, given the adversity we had to face ... to be fighting there at the end and give ourselves the opportunity to win that game, was a big effort."
