21.   Chaos broke out after police fired tear gas to control unruly fans.

22.   French authorities faced unruly fans at the start of the World Cup.

23.   For the second year in a row, a night game at Wrigley was disrupted and delayed by unruly fans.

24.   In April, unruly Brighton fans caused a game against York to be called off.

25.   In Cali, where last-minute police drills included practicing swarming an unruly fan, Brazil and Mexico meet Thursday.

26.   Meanwhile, games at Bergamo, Naples and Milan were marred by unruly fans.

27.   Mayor Thomas Menino said the unruly fans shamed the city.

28.   Norman, who has had his share of run-ins with unruly fans, said heckling was something players just had to accept.

29.   Panic set in when police fired tear gas to subdue unruly fans, witnesses said.

30.   Police responded with a baton charge against the unruly fans.