Should the Australian team hold aloft the world netball championship trophy on Sunday, one person in the stands will have very mixed emotions.

Sharelle McMahon will be thrilled for her Diamonds' teammates to win the world crown after their four years of sacrifice and hard work.

But the former captain will also feel pain because she should be right in the centre of the celebrations.

McMahon was in the final stages of her own four-year plan which was to culminate in Singapore.

She would lead Australia as they successfully defended their world title and, in the process, become the country's most capped player.

Then retirement, a new business and babies.

But that was thrown out the window when she ruptured her Achilles in late March playing for the Melbourne Vixens.

Now, instead of being out on court marshalling the side, she's on the sidelines commentating on radio on Australia's matches.

The transition from Australia's best netballer and the team's much-loved leader to being a supporter has not been easy.

Arriving at Singapore Airport and greeted by a larger-than-life poster of herself promoting the titles, the 33-year-old admits she had second thoughts.

"When I first landed here, I was thinking 'What am I doing here? Why did I decide to do this'?

"I'm still not really sure how I feel. It's hard to describe but it's actually been OK.

"Really, the only time I'm feeling it is just before the game when the girls walk out onto the court.

"Just before you get called on, when you're standing around in your huddle, it's a really special feeling.

"I love that time so, when I'm looking at them, I'm a bit jealous."

McMahon admits that while the players, some she has known for more than a decade, have tried to include her, she no longer feels part of the team.

She said she doesn't get the in-jokes and feel the close bond team-mates share.

Just before the Australian side left for Singapore, she presented the captain's necklace to new leader Natalie von Bertouch.

Only a new "tradition", the necklace is engraved with the initials of another former national skipper Liz Ellis, who handed it on to McMahon.

It also has the dates of the reign of their captaincy.

McMahon's dates are 2007-2011.

The question everyone asks is does that mean her career is over?

McMahon isn't sure.

"I really don't know yet exactly what I'm going to be doing in my playing future," she said.

"For years, I had a plan that I was going to be playing in this world championships and I thought that would be it and I would go on to the next phase.

"Now that the plan didn't work out the way I'd hoped, it feels like there's a bit of unfinished business.

"That's a bit silly because I feel like I've achieved so much with the teams I've played with and the experiences I've had but there is just something still there."

The former Melbourne Wesley College student has indeed achieved a lot.

After making her debut in 1997, she played 118 Tests and only needed five more to eclipse Ellis' mark as Australia's most capped player - a feat she would have achieved with the pool games plus finals in Singapore.

She still managed three world championships - this to be her fourth - and four Commonwealth Games.

McMahon became the first netballer, and only fourth woman, to be the Australian flag-bearer at the opening ceremony of the Commonwealth Games in Delhi last year - a competition where the memory is still raw of arch-rival New Zealand's double overtime win in the gold medal match.

McMahon is only three months into her rehabilitation after surgery on her Achilles but, like the high achiever she is, she is ahead of schedule.

That means she could be right for the start of next year's ANZ Championship competition with the Vixens.

What could sway her decision to play again is that the titles which drive a netballer - the quadrennial Commonwealth Games and the next world championship - are still a very long way off.

Plus more personal ambitions, like motherhood, beckon.

"My husband and I are certainly looking forward to that part of our lives together and that's another thing with the playing, throwing that in there. You've got to carry a baby for nine months," she said.

In the meantime, she's enjoying her new broadcasting career in Singapore, and is hoping that means sharing the world title with the Australians, even from afar.