Maps that Tanks are Good to use and Bad to use as well?

Competitive Discussion
1

For Example Sigma is great at Circuit Royal.

If anyone has the knowledge on which Tanks are great to use at a certain map, I would really appreciate it thanks.

2

Sigma is good on maps that have cover, rein is good in maps with corridors, d.va is good if there aren’t any flanking routes.

3

Ball is good on almost any map but especially Gibraltar and Numbani especially on attack. I think it depends more on what the other team has than the map but on those 2 I pretty much play Ball no matter what, even if there are like 5 counters.

I can’t think of any maps where Ball is so bad that I wouldn’t even consider playing him at all. But the worst are probably either Busan or one of the flashpoint maps.

Zarya is pretty good at King’s Row and also that Lijiang map that is mostly indoors. Also Sigma is good on Midtown 1st and 2nd point especially on defense. But as far as instalocks I can’t really think of any besides the circuit royale sigma that you already mentioned.