They'd have to play zone because there no way they could keep up with current players, especially the perimeter players. The bigger guys would have an easier time since they don't have to move too much, but it'd be an open lane to the bucket every time.
They'd have to be perimeter oriented. It would be hard to see any of the old guys being able to beat even an bad NBA defender off the dribble.
Team probably wins 10-15 games. You underestimate the effects age have on the body. 40 year olds won't be able to compete with guys in their 20's.
Any team with Shaq in it is still a 30 win team. Throw in Stock, who would give the best PG in the league a shake even after 2 years off(how much slower can he have got seriously). Malone would be a beast still, Mourning can play, DRob would be good for 15 a game(minutes that is). Kerr and Reggie can still shoot.
That said I would throw Payton into that team now, especially if Shaq and Zo are in. There are a few other guys like Horry who would be valuable bench guys.
On top of all that though, the biggest factor would be if you gave them an offseason or not, put that team together to train and get into some sort of shape and they would be at least a .500 club. Take them off the streets now and they would be pretty horrible, every team would just run them into the ground, or at least the 5 or so with PG's good enough that Stock couldnt stop them anyway :)
the league has gotten more athletic and younger, so it would be hard for these guys to keep up. However, they would probably beat teams like the Knicks who don't play defense and lack the fundamental skills to be succesfull in the NBA. But teams like the Suns, Spurs, Mavs, Cavaliers, Bulls would run them out of the league because of their ability to beat teams on the perimeter.
15-25 games. bodies will be breaking down through the course of the season. and that team would be injury-plagued.
BTW, who would coach the team?
This whole thread is a prime example of how completely biased this board is towards the "good old days." Your judgment is so horribly clouded by Hardwood Classics that you believe a group of retired players could potentially win an NBA Championship, years after their primes. To even believe that they'd win 20 games is so infuriatingly ridiculous that I can't even muster a good response.
These players retired for a reason. Malone, Rodman, and Robinson were clearly losing a huge step when they called it quits. It has been several YEARS since then. More time has passed between Jordan nailing the game-winner in Utah to his Washington days than his Washington days to 2007. And he was only averaging 20 points that year.
Their opponents would be accused of running up the score in the 2nd quarter. Half the team would re-retire one week into the season due to injury, and the other half would join them at the All-Star Break. It'd be the first time an NBA team was contracted at Mid-Season.
They'd maybe win one game, but probably not. Let's get real people.
10 games minimum but thats with no major injuries.
Who would coach such a group?
I'd say they are a 25-win team IF they stay healthy during the season.
If not, they will easily be a 10. I don't think having that many old people on one team is that good, no matter how smart they are, because if they could be that smart and still be, say, 35, it would be alright, but 40+? Pushing it. They don't have the same ability, and it would be pretty much gone. You have to take into account things like fatigue, which would ruin a player if he had to play 40+ minutes if he weren't conditioned, especially if he's older. I could guarantee you there's a couple of people on these forums that knows the game better than at least 12 NBA players, but there's a reason they don't have contracts.