Chalk has been a sensation for the Raiders in 2006, and his impressive move from the backline to the back row has allowed him to secure his future with the club until at least the end of the 2008 season.
After an iconic four try effort in his second NRL match in 2004 Chalk has struggled to break into first grade playing fullback, due to the form of Raiders skipper Clinton Schifcofske, but his move to the back row has him one of the first players picked each week in the current Raiders line-up.
Chalk said he is happy to be remaining in Canberra for the next two years, but at the same time is still concentrating on the Raiders making it through to the finals this year.
"It's great to have my future sorted out and I can just concentrate on playing good footy," Chalk said. "We still have a job to do this year and I'm really enjoying playing first grade at the moment."
Chalk said staying with the Raiders is something that he has wanted all along, and his decision was based around support from those close to him.
"I never really wanted to leave Canberra so I'm glad that I have been offered the chance to stay," he said. "I spoke with my family and friends and they agreed it was the right thing for my football career."
Raider's general manager Don Furner said Chalk's form has warranted the new deal, and he looked forward to seeing Chalk continue his rapid development in the Raiders back row.
"Marshall's form has done the talking this year and we had no choice but to re-sign him," Furner said. "He has been one of the standouts in the team since shifting to the back row and we look forward to him getting even better."