The ASADA investigation into the alleged use of performance enhancing drugs at Cronulla has hit a road block, with lawyers from both sides unable to reach common ground.
Sharks forward Wade Graham became the first Cronulla player to be interviewed by the Australian Sports Anti-Doping Authority on Monday over the possible use of banned substances in early 2011.
ASADA officials planned to use Graham's interview as a test case to determine how long each interrogation would take and how co-operative players would be before scheduling any more interviews.
However, it is understood Graham's interview held in Sydney's CBD involved far more legal wrangling than testimony from the back-rower.
"We were with ASADA for a few hours today at which time a number of matters were gone over," Sharks lawyer Richard Redman said.
"And no doubt there's more to come."
Up to 13 current Sharks will be required to front formal interviews, with players required to co-operate with doping authorities under the terms of their NRL contracts.
No more interviews will be held this week as ASADA investigators reconsider their plan of attack.
The investigation of the Cronulla club centres on sports scientist Stephen Dank's stint at the club between March and May, 2011.