EVERY draft has a bolter – a prospect who comes from nowhere to be selected in the early rounds.

But the story of one of year's outsiders has a twist, as he's gone from being a key forward prospect to one of the talent pool's best key defenders – and his name is Balta. Noah Balta.

The Calder Cannons product with Croatian heritage played in attack right throughout junior football, but now he's likely to be selected in the first round of the NAB AFL Draft on the form he's shown down back.

"The clubs view me as a backman, they say backman straight away," Balta told AFL.com.au.

"I've played forward and ruck for most of my junior career, but I've enjoyed my time down back."

While he was good enough to earn a spot in the AFL Academy on the back of his work in attack, Vic Metro coach Marty Allison tried the 18-year-old down back during the U18 championships with promising results.

Renowned for his dash and athleticism, Balta ran with the idea.

"Marty told me he likes to put his best attacking players in defence, and his best defensive players in the forward line, so it's worked out well for me," he said.

"Then I started to play more in defence with the Cannons later in the season, and I learnt more about positioning and the players I was playing on.

"The recruiters can now see that I'm coachable, and wherever play on the ground, I'll give 100 per cent."

AFL national talent football manager Michael Ablett says the 194cm Balta has an exciting mix of athleticism and upside that will have him firmly on recruiters' radars.

At the National Combine, an impressive time of 8.38 in the agility testing was followed up by strong result of 6.50 in the 2km time trial.

"He's got great versatility in that he can play both ends of the ground, where his athleticism allows him to play on both talls and smalls," Ablett said.

"He's got some work to do on his decision making when he does counter attack, because he sometimes bites off more than he chew.

"He's not a big watcher of footy and doesn't study the game, so that's another area of the game he needs to improve.

"But the pleasing thing from athletic perspective there is plenty to work with."

With the draft quickly approaching, Balta says he's left little in the tank in his efforts to be selected on November 24 in Sydney, and is taking a philosophical approach to achieving his dream.

"I've got a mix of excitement and nerves ahead of the draft, but you've got to take life as it comes," he said.

"If I'm not good enough, I'm not good enough, because I know I've given it my best."