Client couldn't start my game.
So I've been playing ranked all day and every game has been starting normally. This time, my game didn't load and I wasn't taken to the loading screen either. I waited for the second screen (loading screen) to start and it never did, so I quit league and tried to reconnect but the "Reconnect" button never showed. I quit and logged back in one more time but the game had been remade and I lost LP for it.
This only happened to me once, but I figure it's something to point out.
Not sure if it WAS the client, but all other games I've had loaded perfectly with no wifi issues etc., so I'm just going to say it was the client.