I used to run a small gambling ring during lunchtime at my school. (forcesofgeek.com)
According to the ALDF, Vick's operation «housed and trained over 50 pit bull dogs, staged dog fights, killed dogs and ran a high stakes gambling ring with purses up to $ 26,000.» (onegreenplanet.org)
Runners have been known to loiter at casinos, keeping numerous mobile phones and tablets near them to receive orders from illegal gambling rings. (fortune.com)