Western Bulldogs Jordan Roughead and Ellie Blackburn took part in a training drill with a difference this morning.

With VU Whitten Oval hosting Channel Nine's Today show for the day, Roughead and Blackburn took part in an exercise that saw presenters Karl Stefanovic and Tim Gilbert dunked in an oversized tub of water.

It was all for a good cause, though, with a $1000 being donated to the Royal Children's Hospital as each host went under.

Roughead was charged with the task of dunking Stefanovic while Blackburn's duty was to see Gilbert get wet in a handball drill that saw the presenters drop into a tub of water via a dunking machine as soon as the players hit a target.

Roughead found the mark first to send Stefanovic, who donned a Western Bulldogs jumper for the exercise, into the drink, with Gilbert - also wearing the red, white and blue - getting drenched soon after when Blackburn's accurate handpass  hit the 'hot spot'.

Both dunkings brought cheers and applause from the big crowd as Richard Wilkins and Lisa Wilkinson, along with The Footy Show's Rebecca Maddern and Billy Brownless, looked on.

Gilbert later caught up with coach Luke Beveridge for a chat as the Today Show spent the entire morning broadcasting from Whitten Oval. There were plenty of fans on hand helping to create a festival atmosphere ahead of the Bulldogs' AFL season launch against Collingwood this Friday.