He is part owner of The Clubhouse Grill.
Mariano donated his 2001 Rolaids Relief Man of the Year Award to the New York Fire Department. It is on permanent display at their Brooklyn headquarters.
When Rivera enters a game at Yankee Stadium, the song "Enter Sandman" by Metallica is played. Because of this, he is sometimes referred to as The Sandman.
Former/current Yankees Ramiro Mendoza and Ruben Rivera are cousins of Mariano Rivera.
He is the last player to naturally wear the number 42. Major League Baseball retired it across the board in 1997 to honor Jackie Robinson.
Though it isn't officially tracked, on a per batter basis, he likely breaks more bats than any pitcher in baseball.
He is the son of a fisherman and was born in Panama City, Panama.
Mariano came up to the big league as a starter, but was quickly moved to a bullpen role.
Early in Mariano's career, former Yankees General Manager Gene Michael almost dealt him to the Detroit Tigers for David Wells. "I didn't say yes, and I didn't say no," said Michael. "I'm glad I didn't have to."
Rivera is a deeply religious man. He financed the construction of a church in his native Panama City and can often be seen reading the Bible in the Yankees' clubhouse. At a church service honoring him in Panama after the 1999 season, he announced that he would spend four more years in baseball and then retire to become an evangelical minister.
From Mariano Rivera - A Man With a Message by Michael Aubrecht
Another nickname that is often associated with Mariano: "The Hammer of God."
He is one of three relievers that have closed a game for a Cy Young award winner. The other two are Rich "Goose" Gossage and John Franco. Mo has saved games for Dwight Gooden, David Cone, Roger Clemens, Randy Johnson, CC Sabathia and Bartolo Colon (source).
In 2005, Mariano was named as the relief pitcher on the Major League Baseball Latino Legends Team.
In 2007, he was named as the closer on the ESPNdeportes.com All-Time Latin Stars team.
Special Thanks: BaseballLibrary.com and Fact-Index.