"Opta defines a key pass as “the final pass or pass-cum-shot leading to the recipient of the ball having an attempt at goal without scoring.”
In addition to assists, the key pass metric is a telling way of determining which players generate opportunities for teammates.
Coinciding with chance creation is the big chance metric. A big chance is "a situation where a player should reasonably be expected to score usually in a one-on-one scenario or from very close range."
In other words, a big chance is the sort of golden opportunity that players dream about and should rightly be trusted to finish."
The Most Important New Advanced Soccer Statistics and Why They Matter
There was a time, not so long ago, when statistics in soccer meant goals and assists. Corner kicks may have been counted, and maybe total fouls too. Maybe. Mostly, though, it was all about who scored and who passed the goalscorer the ball...
From the Premier League website...
"A 'big chance created' is defined as providing an opportunity where the receiving player would reasonably be expected to score and manages to get a shot away. These usually in occur in one-on-one scenarios or from very close range."
Midfielders creating 'big chance' of bonus points
The Scout explains why playmakers such as Yannick Bolasie are scoring highly in Fantasy Premier League
Again, a "Pre Assist" is not a "Big Chance Created"
One is a statistics in regards to a pass before the final pass while another one is directly a function of the final pass.
You're welcome.

