MOVE over Coal Train - there's a new heavyweight in the NRL ranks and he tips the scales at a staggering 133kg.

While 122kg South Sydney enforcer Dave Taylor has long been regarded as one of the heaviest - if not the heaviest - players in the game, Bulldogs big bopper Sam Kasiano has settled the argument once and for all.

The young Dogzilla steamrolled the Roosters defence on Monday night, brushing past 120kg Mose Masoe and 110kg Jared Waerea-Hargreaves like they were ten-pins.

Despite being listed in the NRL media guide at 122kg, Kasiano said he had gladly added more size in recent months - and would need it against the monster South Sydney forward pack on Saturday night.

"I love it, it's the heaviest I've been," said Kasiano, whose blistering start to the year will be rewarded with a new deal at Canterbury.

"I like this weight, but the trainers have been trying to make me lose it.

"South Sydney have got some big boys with (Sam) Burgess, (Scott) Geddes and Dave Taylor. We just have to step up and give them a go."

Despite his giant frame, Kasiano continues to play long minutes and display wonderful agility. He praised new coach Des Hasler for improving his game and for "making me a better ball-player and getting my fitness better". Is it any surprise that both New Zealand and Queensland are desperate for his services?

Kasiano revealed he had played with the Aspley Devils in Brisbane before he arrived at Belmore, and had already been in contact with Maroons coach Mal Meninga.

Kiwis coach Stephen Kearney said yesterday Kasiano was almost selected for the Anzac Day Test, and was definitely part of future international plans.

Rugby league might be getting faster, but the big men are clearly here to stay.

Manly wrecking ball Tony Williams weighs 120kg, just ahead of teammate George Rose. Canberra's David Shillington is 115kg.

Gold Coast centre - and Kasiano's former Bulldogs buddy - Jamal Idris has caused plenty of talk about his plumper appearance in recent weeks.

The Gold Coast Titans claim Idris weighs 115kg, but there is widespread belief that figure has increased by as much as 10kg.

North Queensland coach Neil Henry, whose side travels to the Gold Coast on Friday, said of Idris: "He carries his weight all right, 120-odd kilos. He is hard to stop. He is strong and mobile and has an offload too."

Follow @Telegraph_Sport on Twitter and like Telegraph Sport on Facebook

Originally published as Move over Coal Train here comes Dogzilla