Questão jurídica principal
Whether the Jiu-jitsu backward roll on 12 September 2008 qualified as an accident under Art. 4 ATSG
Decisão extraída
No. The misspelled or awkward execution of the roll remained within the ordinary range of that sporting movement and lacked a program-disrupting, objectively unusual external factor.
Fundamentação extraída
For internal bodily injuries, accident coverage requires a special, clearly perceptible additional event. Here there was no fall, slip, collision, or other external mishap; the injury arose from an unsuccessful but still typical movement pattern in the sport.