Croker said the Raiders were going to have their hands full at Canberra Stadium, with Williams surrounded by a plethora of gun players including Shaun Kenny-Dowall, James Maloney, Mitchell Pearce and Michael Jennings.
"[Williams] does take a bit of heat off the halves as well. He's got that ball-playing ability," Croker said. "But it's not a one-man show."
The 22-year-old will be the fastest Raider to reach 100 games since making his NRL debut in 2009 and the second-youngest ever to achieve the milestone.
"It's nice to have those little accolades along the line," Croker said. "I've been lucky enough, touch wood, with injuries.
"Hopefully I can keep that going and a couple more 100 [games] to come I suppose, that would be nice."
Roosters captain Anthony Minichiello is hoping for a turn of fortunes after his send off against the Raiders last year.
"Last year wasn't a great memory for me down there and I think it's fair to say I've had mixed success at Canberra in the past," said Minichiello. "It's a tough place to go, particularly when you have a night game there. It's cold, quite hostile and you need to be on your game."
- AAP