Hamstring rules Slater out
Billy Slater will miss Sunday's clash with the Knights with his hamstring complaint still yet to fully recover.
The fullback, along with Storm medical staff made the call on Thursday evening following training where Slater was put through his paces.
"We made a big decision this afternoon in consultation with the medical staff and Billy that we are not going to play him this Sunday," Slater said.
"He's been training really well trying to build that strength in his leg.
"He could have played but there's still a slight risk he could re-injure it and if he does re-injure it that is going to put him out for a number of other weeks."
While Slater was close to making his return to the purple jersey on Sunday he is expected to be given the all clear for Origin 2 in Sydney to be played on June 24.
"It was awfully close (to playing this Sunday)," Ponissi said.
"He will be right to play in Origin 2, it was still a slight risk with the hamstring so we've decided to rest him this particular weekend."
Storm's 24-hour Hostplus Team Update will be announced at 2:00pm on Saturday 16 June.