FORMER Sharks forward Josh Cordoba has become the club's second ex-player to commence legal action over the controversial 2011 supplement program.

News Limited can reveal Cordoba has hired the same law firm to advance his damages claim as former teammate Isaac Gordon, who commenced proceedings in July.

Both players are now living in central Queensland, working in mines surrounding Gladstone, after being released from Cronulla last year.

Gordon has been the poster boy for health concerns surrounding the supplement program after emerging from a game in May 2011 with severe bruising down the length of one of his legs.

An independent investigation found players were given peptides CJC-1295 and GHRP-6 in the form of injections, then creams and tablets, while Gordon was also advised to take BB Formula — traditionally used on racehorses — to help him put on weight.

Cordoba was a member of the Sharks team for most of the 11 matches that the program covered.

The program is now the centrepiece of ASADA’s NRL investigation, with players who might have been exposed to banned substances in danger of two-year bans.

As ASADA and the NRL move closer to finalising their investigation into Cronulla and announcing any punishments against players, staff or club, Sharks officials have become increasingly concerned about the prospect of widespread legal action.

Sharks CEO Steve Noyce on Wednesday night confirmed the club received a legal letter from Cordoba’s solicitor, James Chrara, in the past month.

Cordoba declined to comment on Wednesday night.

Chrara, however, confirmed the 28-year-old had approached his firm, Shine Lawyers, several months ago to seek damages from the Sharks.

At present there is no evidence Cordoba suffered the same type of bruising as Gordon in 2011.

But Chrara believed clinical records could show Cordoba has a case against the club, because he was administered with substances that were allegedly different to those to which he originally consented, none of which were banned.

"It’s an almost identical complaint (as Gordon)," Chrara said.

"Josh was part of the same program. At present there is no evidence of physical (outward) damage, but there may be something inside. That’s what we are continuing to investigate and we have asked Cronulla for records.

"But certain elements of the claim stand regardless of what they show, because it’s our belief there has been a trespass against Josh."