This one's going to be hard since there's a billion different combinations I could have...
1. Sachin Tendulkar
The greatest one-day player ever for me. Aside from the many games he won for India, inparticular stands out his form in 1998 when the Aussies just couldn't get him out. The one game where they did get him out he took five wickets or so as well. But there was one game where Australia produced a massive score, beyond 300 I believe, on a tough wicket, and Tendulkar produced a great century when he it looked like India would lose. He was just sensational.
2. Mark Waugh
I talked about different combinations didn't I? Gilchrist needs to make the team as the best one-day wicket kepper... yet Mark Waugh was the better one-day batsman. I'm sure many will disagree, but Waugh is one of the true underrated one-day batsmen. I can remember as far back as 1995/96 when Australia won and lost ODI's on how Waugh opener - at the time the Aussie batting was very poor with Taylor and Slater not quite firing in the shorter version of the game. But Waugh was sensational during that period and won games off his bat. He'll always be insanely underrated when it comes to his one-day legacy. One of the five best ODI batsmen ever.
3. Viv Richards
Richards, Tendulkar, Bevan and Akram are the easy choices. Richards massive 170+ score stands as one of the best ODI innings ever and the definitive Viv Richards "I just stole the game from you when you were in a good position" innings. Words can't articulate the dominance of that innings.
4. Dean Jones
While people praise Ponting and Gilchrist, and rightly so... Australia has some forgotten and underrated ODI greats. Cricinfo summed him up perfectly when it says Dean Jones wrote the book on how ODI cricket is player. Bevan took it further with his pacing... but Jones was brilliant. My favourite Dean Jones innings? There's a lot of them. One that stands out is Australia needing about 100 off 10 overs, which in those days was impossible, and still today very unlikely. This innings showed why Jones is an ODI legend as he invented all the great ODI shots... sprinting down the pitches, delicate sweeps etc... he was run out just as Australia looked home and they lost by one run to New Zealand. I can't speak for any Australians, but I think they've forgotten that once upon a time their entire one-day fate relied on the excitment and flamboyance of Jones. That's why Jones and Waugh are better ODI players than Ponting and Gilchrist... the team entirely relied on them as certain stages and they delivered. Look up Jones' stats at cricinfo and read the results of some of his matches... he seriously played some of the greatest innings' ever, and yet people forget him.
NOTE: Writing this makes me realise how many underrated ODI players there are...
5. Adam Gilchrist
You can pontificate where to bat him. Maybe he should open and Mark Waugh bat down here. I put Waugh as opener because he was mroe consistent and less likely to go out, and yet still make a good century. Gilchrist really needs no explanation, it's just where to play him.
6. Michael Bevan
Do I really need to explain why Bevan was so exciting? My favourite Bevan innings was against New Zealand not long ago when he was forced to bat with Brett Lee and the tail... Lee held up, but Bevan steered Australia home by finding so many twos in unlikely places. It really was the impossible innings... in fact while it wasn't the fastest innings (though it was fast) and didn't have big sixes and random shots that come off that are associated with most people's choice for best innings ever, it did have other things. For one it was done under the highest amount of pressure (it was a must win game for Australia). Two it was done at a great pace, when a run and ball was needed and still 150 required or so. It was done with the tail. Oh I could go on forvever but I'll stop.
7. Imran Khan
And he'd captain the side too! Like I said, there's no consensus one-day side, and there's a billion things to consider when talking about ODI's. The side needed an all-rounder so I picked him. But Imran was also a brilliant death bowler who introduced the concept of bowling yorkers at the death and introducing slower balls at the death. Such thinking had a massive impact on ODI cricket. As far as the death bowler goes, I'd have Khan and Garner.
8. Wasim Akram
Best one-day bowler ever. Nobody took so many damaging wickets at the start, and he did a good job near the end as well. My Wasim memories involve unplayable balls to England in the world cup. Oh poor Alan Lamb... he got what I considered the best fast delivery I've ever seen. As a kid watching the world cup he was scary... to move the ball like that was just insane. It was most important because as great as guys like McGrath are, McGrath can't do much with the ball near the end of the innings. Wasim could.
9. Alan Donald
One of the most underrated player. It was either him or Waquar Younis... I picked Donald because he was the crucial bowler upon South Africa's return. Waquar had Wasim, Donald was a star by himself when South Africa returned. Did anybody question how South Africa just came back into cricket and were awesome while their rugby team tok time to get back into international competition? Donald was the main reason. South Africa could have won the '92 world cup if not for bad luck. My memories of Donald were of a complete bowler who could do anything... yet he's never talked about. He has the highest percentage of top order dismissals in Test cricket, yet he's rarely discussed. That's sad.
10. Muttiah Muralitharan
This was a close one. I think Warne showed more of a champion quality in the important matches, like the last two games of the 1999 world cup. Just look at Warne's world cup records and you'll see he was immense. But you can't deny Murali for his longevity and consistency. I always liked it how Murali could bowl one ball and it would always go to the fielder behind square leg, like it was the only shot batsmen could play against him. It dries up runs. That's the best way to think of Murali in one-day cricket - while batsman can only play three shots to one delivery, a glance, a hard shot, a nudge etc, they often only could play one to Murali and it dries up runs.
11. Joel Garner
He's in there so he can bang in yorkers at the death. Duh.
12th man. Lance Klusener
Seriously... this man, at his best, was the best one-day player I have ever seen. Problem was if you blinked you missed his great form. An average of 40. Did you know that? A handy bowler too... people need to remember how scary he was in the 1999 world cup. He won games when SA were in terrible positions. I thought they'd lost to Pakistan in one game, Klusener came in and like Viv Richards, the game turned so quickly you hardly knew. Yes he stuffed up that world cup, but did people realise he came in when Australia finally had the ascendancy? He got SA back into it and nearly stole the game.
Concerning McGrath
I think most people would have McGrath in their all-time team. I think McGrath was a great ODI bowler... one of the best and he certainly crossed my mind. But truth be told he's been found lacking every once in a while because he doesn't have a great slower ball like Donald... and he never swung the ball like Akram... and at the death seamers can only do so much. Of course he could be accurate at the death, but if he was off he could get slogged. He's one of the best, make no mistake... but I just think he needed more variety to be in the team. Other bowlers I picked excelled at the death, got that new white ball talking and were genrally handy players. I'll also add that I think the team could use one more experienced spinner, so Warne was unlucky to miss out, as was Saqlain... pity there hasn't been a great spinning all-rounder to make my team look complete.