Would you 'call this person' on this (see details)

We have a football pool where I work, yet there are many people who don’t work here whose names are listed as particpants of the pool also. Two weeks in a row, the weekly winners were not people whose names are listed in the e-mail addressed to all by the person who runs the pool.
Would you question the person that runs the pool who these winners are? (a few of us are suspect that these are phantom participants and the person who is running the pool is pocketing the winnings)
The person who runs the pool has yet to win even a week in the last maybe three or four years.