Yes, this is probably the wrong place for this question.
My first pick: zenyata: literally does nothing but shoot balls. Sure he lacks speed, but he makes up for it with deep range buckets, and he’s getting assists left and right
Lucio: listen, I’m not sure what the rules in the nba is on players wearing roller blades, but this dude’s team play is off the charts. With surprising range
DVA: this. Chick. dunks. She’s like young Blake griffin with explosive potential
Pharah: can you say hops? She’s been showing off her potential already, and she slams the competition with surprising defensive potential. You need to prepare for this one
Rein: look, he may miss 100% of his shots but he makes up for it with legendary defensive capabilities, and being able to shut down defenders with a single strike.
All doomfists, constantly moaning throughout the match.
Enemy team will be so confused and uncomfortable they will be unable to keep up with the fists.
Men
Point Guard -> Genji
Shooting Guard -> McCree
Power Forward -> Doomfist
Small Forward -> Solider 76
Center -> Bastion
Women
Point Guard -> Tracer
Shooting Guard -> Widow
Power Forward -> Brigitte
Small Forward -> Pharah
Center -> Zarya
Both
Point Guard -> Genji/Tracer
Shooting Guard -> Widow
Power Forward -> Doomfist
Small Forward -> Pharah
Center -> Zarya
I spent way too much time on this…
Six symmetra 2.0s. GG EZ
Sorry to ruin your dreams but Brigitte can’t play basketball, blizzard hates her. She and Reinhart are the only ones who can’t make a basket when attacking Anubis. Their only melee attack is their weapon, the ball always flies randomly to their left/right.
I believe that’s the philosophy of the Detroit Pistons
PG - Genji. Best mobility to juke and break ankles
SG - McCree. gonna be making 3’s all day
SF - Doomfist. Has mobility, can shoot, has good defense with his passive. a bit of verything
PF - DVA. Dunks for dayz
C - Hog. Gonna be using his hooks to block/deflect
Doomfist, Lucio, Pharah, Tracer, Winston, and Hanzo
Doomfist, Pharah, Genji, Winston , Junkrat. Everyone on my team can dunk with that sick aerial mobility.
Let me tell you, that work was worth it, minus the fact that you didn’t have zen, HE SHOOTS BALLS
Bastion is a girl.
Also double jumping is travelling. Genji would be a terrible point guard.
For real? Bastion is a girl?
And lmfao you’re right on Genji. Well…we’ll just have Sombra hack him when he gets the ball.
Zen is the coach. He knows a lot about balls, this is true, but it’s been awhile since he’s played. He’s retired from playing now.
Genji: White men can’t jump but Genji can, twice!
Hanzo: He can jump too, plus he’s got some accuracy to him
Pharah: Who needs to jump when you can fly?
Lucio: Speeed booost
Tracer: Speed, nothing but speed all day for this team
I don’t know much about Basketball so I’m not gonna put positions or anything but this is my squad
Clearly everyone on your squad is under 5’9" 
Roadhog should be the center, he is like 8 feet tall.
Rein should be your power forward
Junkrat at small forward, he is a lanky tall.
(Sniper)Reaper at shooting guard, rng projectiles that always hit something
McCree at point guard, flashbang and run by.
also yes there were shorts and comics that unveiled bastion was a she a while back.
Oh true lol. I was thinking about adding some height but all the tall dudes are pretty slow. I was mostly aiming for speed and agility. Junk would probably be solid though, that dude is a giant. He’s got that peg leg but if he’s allowed to use his mine then he can jump no problem
Wait I just saw this… if Bastion is a she then what that big cannon do?
Shoots people.
I’m kinda curious what you thought it did when you thought Bastion was a male. 
A team composed by Mercy and Pharah, slam dunking with wings from one side to the other
Ohhhh buddy I always thought that thing was shooting people you know what I’m saying ( ͡° ͜ʖ ͡°)