Bronson Harrison was denied what would have been the game's first try and Daniel Vidot had a second-half effort chalked off as the Panthers blanked St George Illawarra 19-0 at WIN Jubilee Oval.

It was the first time the Dragons - under either the St George or St George Illawarra banner - had been kept scoreless at WIN Jubilee Oval.

The Kogarah crowd were irate with the decisions - particularly the second call where Vidot was ruled to have deflected Nathan Fien's bomb into opposite number Travis Robinson - as the Panthers defence remained unbreached. Harrison was denied due to an obstruction.

But Price played down the effect the decisions had on the game, preferring to take up the issue away from the spotlight with referees bosses Daniel Anderson and Russell Smith during the week.

"In life you have to earn the right to get what you want," Price said. "It's about the want and the intent and we didn't do that from the outset.

"There was no drive to start the game with any intent and they certainly did and we found ourselves 18-0 down at half-time."

Proving a drought-breaking win over premiers Melbourne and 56-point hiding of the Warriors was no fluke, the Panthers edged into the top eight with their third straight win.

But coach Ivan Cleary refused to get carried away with his side's reversal before they enjoy a week off with the bye and then take on the struggling Tigers.

"I think our belief has gone up to new levels over the last three weeks so obviously that's a good thing and that helps and we're just trying to keep improving," Cleary said.

"I thought our start was probably the best we've had all year and the second half I thought they were setting the pace and we were hanging on, but somehow we found a way numerous times to keep them scoreless."

The Dragons slipped to 4-7 before testing trips away to the Bulldogs and Knights either side of the State Of Origin opener.

Robinson and highly-impressive fullback Matt Moylan, committing his long-term future to the Panthers earlier in the week, crossed inside the first 10 minutes. Dean Whare then exploited lazy blind-side defence close to half-time to extend the Panthers' margin out to 18 at the break.

Luke Walsh iced the victory with an 80th-minute field goal.

Dragons winger Brett Morris passed his Origin fitness test despite being quiet for long periods on the left flank. He is expected to be named in Laurie Daley's NSW side for game one on Sunday evening.

Quizzed on whether he would have risked his surgically-repaired knee if Origin wasn't around the corner, Morris said: "It's a good question. I think I would have. I love playing for the Dragons and the Red V. Once it was good to go and told I could have played it wasn't a hard decision.

"There's only a little bit of pain where the scars are. Other than that it's probably better than before I hurt it."

The 26-year-old said he would assess how his knee felt on Sunday before making a decision on whether he would train with the Blues early in their Origin build-up.

"I spoke to Laurie during the week and we kept in pretty close contact," Morris said. "I wasn't going to lie to him. I told him the truth from the start and let him know how we were going and what it was looking like."

PENRITH PANTHERS 19 (Travis Robinson, Matt Moylan, Dean Whare tries; Luke Walsh 3 goals, field goal) defeated ST GEORGE ILLAWARRA DRAGONS 0 at WIN Jubilee Oval. Referees: Adam Devcich and Chris James. Crowd: 10,922.