Robson was taken from the field after 25 minutes in tonight’s 28-22 NRL trial loss to Wests Tigers at Remondis Stadium. He was taken to hospital for scans.
The injury to Robson is a major blow to the Sharks just a fortnight out from their opening round Telstra Premiership clash against Gold Coast Titans at home.
With key playmaker Todd Carney out with a hamstring injury, Robson was combining well with five-eighth Daniel Holdsworth before he was taken from the field.
The Sharks, who were also missing key men in Paul Gallen, Luke Lewis, Chris Heighington and Beau Ryan, enjoyed the better of possession in the opening 20 minutes with several attacking raids inside the Wests Tigers quarter.
NSW and Australian prop Andrew Fifita was strong up front, scoring his side’s first try with a fend on Adam Blair. The scores were locked at 6-all at half-time after Wests Tigers half-back Luke Brooks took an intercept pass for an 80 metre try.
Cronulla took a 10-6 lead when veteran winger Eric Grothe Jnr defused a 10-6 lead off a cross-field bomb by Holdsworth in the 45th minute.
Wests Tigers’ second try came against the run of play when winger Marika Koroibete swooped on a grubber kick to race 85 metres to score. Winger Pat Richards converted for a 12-10 lead to the visitors.
From there, Wests Tigers produced some of their trademark razzle dazzle resulting in consecutive tries to Chris Lawrence, Richards, and Keith Lulia for a 28-10 lead after 67 minutes.
Fifita then put second-rower Sam Tagataese over before winger Nathan Stapleton scored from a knock-down in the dying minutes for the 28-22 scoreline.
Wests Tigers 28 (Luke Brooks, Marika Koroibete, Chris Lawrence, Pat Richards, Keith Lulia tries, Richards 4 goals) d Sharks 22 (Andrew Fifita, Eric Grothe Jnr, Sam Tagatese, Nathan Stapleton tries, Daniel Holdsworth 2 goals, Michael Gordon goal).