Thanks, reading it more carefully I see I missed more info... 
Anyway, 86 participants, divided in two equal groups. Let&#x27;s say the 43 participants in the loser group all threw the dice once you&#x27;ll end up with a ~9% chance of the groups average to be below 6.5. So that might well be possible. 
The winners group throwing on average above 9 is highly unlikely purely by chance. Quite interesting.