你会打篮球吗 is normal, but when you say that we can still understand

лучше всё-таки "你会打篮球吗?"

It can be used in daily life. But 你会打篮球吗？will better.

Лучшее: 你会打篮球吗？ 篮球，你会打吗？тоже можно понимать

omg............we could say like this. trust me~~~~篮球你会打吗？ means i doubt that u cant play basketball, so i ask u like this: i put 篮球 at the beginning to highlight that i am asking 篮球, not 足球 not 网球, it is just 篮球. so we could say like this. if u just want to ask a normal question, i should say: 你会打篮球吗？ but if u want to express ur doubt, u could say 篮球你会打吗？ no problem.