The least played heroes prediction is currently listed as Funzii (and Silent) from Quantic.

The last prediction in the compendium, the least played per team, is also listed as Quantic (LGD is the actual winner).

'All tournament predictions cover the Group Stage and the Main Event but not the wildcard match.'

I'm curious to see who the actual 'winner' of that award was. I picked Bulldog like many others.