Saturday is scheduled to be the biggest day ever in sports history with "The Fight of the Century," Kentucky Derby, the NBA and NHL playoffs, and the final day of the NFL Draft.
The New York Post is calling it "Sportsmaggedon."
Even baseball rivals, the New York Yankees and Boston Red Sox are going head-to-head.
More than 160,000 fans are expected to flock to Church Hill Downs for the Kentucky Derby.
Hockey fans will take in Stanley Cup playoffs when New York Rangers will play the Washington Capitals in game two of their playoff series.
NBA playoff game feature the Los Angeles Clippers playing the defending champions San Antonio Spurs in game seven of the first round of their playoff series.
And the showdown between Floyd Mayweather, Jr. and Manny Pacquiao which is being billed as “The Fight of the Century.” Tickets for the fight are going for as much as $350,000.
Watch Why Keith Olbermann is Boycotting the Mayweather / Pacquiao Fight, Below