PSA: If you can't play a role, don't queue for it in ranked.

I just played a game, where I got my secondary role (support) and had a mid laner who was literally a top lane only.. He announced he was first timing the champion he was playing, and asked advice on what to build and which order to level skills. And then preceded to feed and pretty much lost us the game.

If you can't play two roles, don't queue for ranked. If you can, queue for those roles.