The Round 18 KIA play of the week is Sam Kasiano's tackle on Wests Tigers centre Tim Simona.

The Bulldogs were leading 26-22 when in the 75th minute of the game, Tigers centre Tim Simona was levelled by Sam Kasiano.

The Tigers had a play the ball 20 metres out from their line, when a Jordan Rankin pass found Tim Simona who was flatened by Sam Kasiano on the ANZ Stadium turf.

The centre bounced back up, but the tackled had the crowd on their feet.

From the moment Sam Kasiano got onto the field, momentum swung Canterbury's way. 

Down by 10, the bearded big man's entry changed the complexion of the contest, with Kasiano setting up two tries in the space of three minutes to give his team the lead. 

The first was a fortuitous bit of play that saw him collect a loose ball, dummy and then pass to Josh Morris who linked up with his twin, before Kasiano delivered a perfectly-time offload to send Josh Reynolds on his way to set up Will Hopoate under the posts. 

Kasiano finished the game with 137 metres, three offloads, two tackle breaks and a line-break assist, and regularly attracted three or four defenders in every tackle. 

Bulldogs prop Aiden Tolman said it was par for the course in terms of what Kasiano could do.

"When he came on he had some big carries and he's been doing that the last month. That's what he has to do for the team; that's his role, that's his job," Tolman told NRL.com.  

"He's been really putting us on the front foot when he comes on. I thought our bench tonight – and over the last month – has been outstanding."

Hasler echoed his prop's sentiments, paying special tribute to fellow bench behemoth Tony Williams. 

"Sam is capable of that…he's big enough, isn't he?" Hasler said. 

"I thought Tony Williams also provided some great momentum for us and helped us gain some good field position."