The showcase spectaculars in sports, have a constant calendar annually.
American Football has the Super Bowl in February, the World Series of Baseball takes place in October, the soccer Champions League grand finals take place in May. Following this pattern, boxing also has specific times with the biggest fights of the year: May 5 and September 16.
Boxing cards in the United States have established these dates as blockbuster spectaculars. For more than 30 years, the most important fights in the world have been held around May 5 and September 16.
Here is a list in no order of importance, with some of the greatest and most memorable fights taking place around May 5:
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