What is abba penalty shoot out?

What is abba penalty shoot out?

After a few days, the 2018 Russia World Cup begins.
Football(Soccer) has a draw different from other sports
But this only happens in league matches.

If the tournament draws in the game, it will go into extra time.
If there is no game in extra time, proceed to penalty shoot out

If there is no game in extra time, proceed to penalty shoot out
Usually one team, one team, alternately.
Team A is kicked out once, Team B is kicked, Team A is kicked again

However, the IFBA concluded that this was not fair
So they're trying to change the penalty shoot out method.

So far, statistics show that the first team has a winning percentage of 60%
And the psychological pressure of the team that kicked later is very large

So they are trying to change the penalty method to ABBA.

It is the same for team A to kick first and team B to kick
In ABBA, team B kicked and team B kicked once more
That is, the order of kick is ABBA ABBA ABBA

Except the first, you kick twice
Therefore, even if one fails, the psychological pressure the players receive is reduced

This is the same approach as the tiebreaker system of tennis
This is still only used in some competitions
In the 2018 Russia World Cup, use the ABAB system that we used before.

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