Cule Angles
Visca el filòsof!
A flick on from a corner resulting in a goal is undoubtedly a set piece goal, as is a training ground routine where the ball is passed to a man who drops short who subsequently crosses it in.
You said that Keita scored from corner. Keita didn`t head the ball coming from a corner. It was Dani Alves pass who received the ball from corner and then crossed it for Keita.
This reminds me of the similar sort of thing we have in official Barca website where they have 2 columns for assists. One are actual assists and the other one is for decisive passes/leading to goals. Point is, where do you draw a line. How many touches after a corner are we going to take then? 2, 3, 4? For me and for most of the statistics I saw it`s either a set-piece goal or it isn`t.