In many western countries, public concern about violence and other problems at sporting events has increased. Alcohol is often involved. Research shows that approximately 40 percent of the spectators drink alcohol while attending U.S. baseball and football games, especially when alcohol is served within the arenas themselves. Alcohol-related problems can be compounded at large sport stadiums that hold tens of thousands of spectators. This study examined occurrences of overserving at licensed premises both inside and outside the arenas, and allowing entry of obviously intoxicated spectators into the arenas.