https://www.warcraftlogs.com/reports/32pTNbWPBZDv8RQ4#fight=8&type=damage-done
If you check the skill cooldown of this log(like warrior’s battlecry,mage’s frozen orb), you may find that it’s 15% shorted than the skill’s description, definitely someone forge this log.
also check
https://www.warcraftlogs.com/reports/Ca28jLyhVqnBmGf9#fight=24
I think parts of other logs this person uploaded had the same problem.