This is certainly no surprise, and given the circumstances, completely understandable.
Although Usher had been booked as a presenter at tonight's ESPY Awards on ESPN, the singer has been forced to pull out after a tragic jet ski accident over the weekend left his stepson Kyle Glover brain dead.
We can't even begin to imagine what he and the rest of his family are going through right now, and we can encourage him to take as much time off from work, as well as work-related commitments, as he needs.
You guys are in our thoughts and prayers.
[Image via WENN.]