An ankle injury to Jai Arrow has compounded Gold Coast's 24-20 NRL loss to the Warriors.
The Queensland forward limped off 28 minutes into Friday's game after falling awkwardly in a two-man tackle.
The 23-year-old didn't return. He will undergo scans on Saturday, putting him in severe doubt for the Maroons in State of Origin II on Sunday week in Perth.
Titans coach Garth Brennan wasn't confident when asked if he fancied Arrow's chances of lining up for the Maroons.
"Jai has a syndesmosis injury - we don't know the extent of it," Brennan said.
"I'm not a doctor but I wouldn't be booking his flight."
Arrow's injury came moments after the Titans had overhauled an early 10-0 lead for the visitors.
Tries to Ken Maumalo and former Titan Karl Lawton had put the Warriors ahead, before two tries in as many minutes for the hosts by Ryley Jacks and Brian Kelly cancelled out that advantage.
With scores level at 12-12 at halftime, the Titans came out firing in the second half despite being without Arrow or Tyrone Peachey (pectoral).
They could only turn their dominance into two points before a terrible defensive read by Nathan Peats allowed Blake Green to send Roger Tuivasa-Sheck over.
A second try to Maumalo, who ran more than 200 metres, opened up a 10-point gap with five minutes to play and the Warriors looked home.
However, when AJ Brimson burnt Warriors centre Peta Hiku, it set up a grandstand finish.
The Titans came close but couldn't find a way past the Warriors in the dying seconds, despite Adam Blair being sin-binned in the final minute of his 300th NRL match for a late hit on Tyrone Roberts.
"We made it pretty hard for ourselves," Warriors coach Stephen Kearney said, after a disrupted week in which several players missed training due to gastroenteritis.
"We found a way to win, though, and sometimes that's all it takes."
The victory is the Warriors' 16th from their past 18 matches against the Titans and lifts them to 10th on the ladder heading into next weekend's representative round.
The Titans remain in 15th place with four wins.