FORMER St Kilda star Brendon Goddard has lifted the lid on the Saints' drawn 2010 Grand Final with Collingwood, saying if the game had been 10 seconds longer they would have won the premiership because the Magpies were "cooked".

Goddard has also detailed the dramatic aftermath of the final siren when the scores were tied, including Magpies skipper Nick Maxwell's confusion about playing extra time.

The Saints hit the lead late in the gripping Grand Final after Goddard's huge mark and clutch goal, before Travis Cloke responded for the Magpies. Scores were tied at the final siren, with Collingwood then running over the top of the Saints the following week, claiming its 15th flag by 56 points.

It will be the last drawn Grand Final in football history after the AFL abolished the replay in 2016, with a drawn premiership decider to be decided in extra time.

Goddard, speaking on the Caulfield Grammarians Football Club podcast, where he played in its Amateurs premiership last season following his retirement at Essendon, said the Saints would have won a drought-breaking flag with extra time.  

"The following week was really hard mentally for all of us," he said.

"I think (ex-Collingwood coach) Mick Malthouse and (star Scott) Pendlebury are the only two people that were brave enough, or silly enough, to say if there was extra time they would have won which is a total lie because they were cooked.

"We knew at the time out on the ground if there was another 10 seconds we would have won. They were deers in the headlights, we were trying to win the game, taking risks and playing footy, but the thing that hurt us the most is the loss in 2009."

The Saints lost the 2009 Grand Final to Geelong by 12 points in another tense contest, and Goddard said that defeat, combined with the draw, left St Kilda flat after two dominant seasons.

"Collingwood were fresh off a drawn Grand Final but going into the replay we'd lost in 2009, essentially climbed the mountain again and been pushed halfway back down in the drawn Grand Final, and it was like 'Are we ever going to do this?' Mentally we were just cooked. That was the biggest difference," he said.

Goddard gathered 31 disposals and booted two goals in a complete Grand Final performance, which he backed up with 29 touches and a goal in the defeat. He said it was left to Saints skipper Nick Riewoldt to inform the Magpies there wasn't extra time.

"There was an eerie fog over the ground [after the draw] and it took literally 20-30 seconds to take everything in," he said.

"'Rooey' (Riewoldt) tells a story that as the siren went Nick Maxwell was yelling at all his teammates saying 'Let's get in boys, let's get in and get ready for extra time' and Rooey turned around to him and being pretty blunt said 'What are you talking about you idiot? We've got to come back next week', and Maxwell apparently was like 'Oh, yeah sh*t'."

Goddard's high mark over Magpie Heritier Lumumba and subsequent goal is written into Grand Final folklore, and he said teammates had since conceded they thought they had the game won at that moment.

"Funnily enough, years and months go by and a few of the guys have admitted at that point they thought we'd won the Grand Final. It's probably not a good headspace to be in when there's still five minutes to play," he said.

"It was hard not to get caught up in the emotion of it and the feeling around the ground. You could feel a lot of the crowd and supporters felt that was it. I knew there was a bit of time left."

Goddard departed the Saints at the end of 2012, where he had been the No.1 draft pick and played 205 games, to finish his career at Essendon at the end of 2018.