String snap scenario

Hi All,

I've cut the string on purpose to illustrate a particular snapping point of the string. Would anyone want to share their thoughts on 1) how the string could have snapped based on the attached picture and also on 2) what could have caused the string to snap.

Scenario:
1) Grommets already rotated or changed
2) string was freshly strung after a day
3) the snap occurred after a smash

Attached Images