Sheesh, Philly fans aren't near as bad as some others...
1986 Montreal Stanley Cup riot
1986 After the Canadiens won the finals, fans took to the streets to celebrate, and ended up rioting.
1990 Detroit riot
June 15, 1990 Widespread rioting occurred in Detroit after the Detroit Pistons won the NBA Championship.
Chicago Bulls Championship riots
1991-1997 Rioting and looting occurred in Chicago after the Chicago Bulls won the NBA Finals in 1991, 1992, 1993, 1996 and 1997
1993 Montreal Stanley Cup riot
June 9, 1993 A year before the riot in Vancouver, Montreal was struck by a riot. In the epicenter of the riots, Ste. Catherine St., stores were looted and police cars were set on fire. The riots eventually caused $2.5 million in damage,[4] $3.75 million in 2016 dollars.[5]
1994 Vancouver Stanley Cup riot
June 14, 1994 In one of 2 riots in Vancouver, the National Hockey League team Vancouver Canucks lost to the New York Rangers in Game 7 of the Stanley Cup Finals. In what was supposed to be a congregation of 50 to 70 thousand fans led to riot after a man fell into the crowd. Policemen attempted to aid the man on bicycles, which the fans attempted to take, and the police fired tear gas into the fans, initiating the riot.
2008 Montreal riot
2008 After the Canadiens defeated the Boston Bruins in the playoffs, fans began rioting in celebration.
2010 Montreal riot
2010 Montreal was stricken with a fifth riot after the Canadiens defeated the Pittsburgh Penguins in Game 7.
2011 Vancouver Stanley Cup riot
June 15, 2011 17 years after the '94 riot, Vancouver is faced with a second riot, after the Canucks lost, also in Game 7, to the Boston Bruins. Unlike in 1994, the fans met at giant screens, where Game 7 was being televised. Shortly before the game's end, fans began throwing bottles at the screen, as well as burning Canuck and Bruin jerseys and flags. The riot eventually escalated when fans began overturning and burning cars. In all, the fans burned 17 cars, as well as a fire truck, and ultimately, 85 rioters were arrested.
http://newsfeed.time.com/2010/06/18/l-a-s-rowdy-post-championship-ritual-continues/https://mic.com/articles/102836/5-other-cities-that-rioted-after-championship-games#.Qpe74DmD0https://www.therichest.com/sports/10-of-the-most-costly-sports-riots-in-history/Interestingly, fans in MA rioted after the Patriots lost...
https://twitchy.com/gregp-3534/2018/02/04/thugs-violent-riot-starts-after-super-bowl-no-not-in-philly-in-amherst-ma-videos/