The Rox - Homophone of "Rocks". Imitation of the names of the Red Sox and White Sox.
The Blake Street Bombers - Reference to the street Coors Field is on.
The Blake Street Bullies - Same as above.
Todd and the Toddlers - Reference to when Todd Helton was a veteran player surrounded by a team full of rookies and young players after the team management decided to focus their efforts on getting new players by bringing them up through their own farm system.
Dem Bums - From the Brooklyn years. Reference from the team's problems during the era getting a world championship.
The Boys of Summer - From the Brooklyn years - Reference to baseball being the only major team sport played during the summer. As with "Dem Bums", usage of this nickname for the Dodgers has faded with time; "Boys of Summer" is now often used to refer to baseball players in general.
The Blue Crew - Reference to one of the team's colors.
Los Doyers - Name in Spanish. Reference to the large Hispanic population of Los Angeles.
The Lords of Flatbush - A nickname of the Dodgers when they were in Brooklyn.
The Trolley Dodgers - A nickname of the Dodgers when they were in Brooklyn. This was the name of the team before it was shortened to "Dodgers" in the 1930s.
The Evil Empire of the West - Used by detractors. A reference to the Yankees and the Dodgers ballooning team salary of 2013.
The Metropolitans – Reference to the 19th-century New York baseball club. Source of the "Mets" name.
The Kings of Queens – Reference to the team's home, the New York City borough of Queens.
The Loveable Losers – From the 1960s. Reference to the team's mediocrity in its early years.
The Miracle Mets - From 1969, the year when the Mets went from losing club to world champions.
Pondscum – Used by detractors, mainly by Cardinals fans in 1987.
The Bad Guys – A reference to the 1986 Mets, who were known for their high level of performance, hard-living lifestyles, and conflicts with each other and other teams on and off the field. Jeff Pearlman wrote a book about this team titled The Bad Guys Won.
Los Mets - Reference to the large number of Hispanic players compiled by Omar Minaya.
The Bronx Bombers - Reference to the team's home, the New York City borough of the Bronx, along with their propensity for hitting "bombs" (home runs).
The Bombers - Short version of above.
The Yanks - Short version of "Yankees".
The Pinstripers - Reference to the team's pinstriped uniforms.
The New Yorkers - Reference to New York City, and the publication "The New Yorker".
Murderers' Row - Reference to the championship Yankee teams of the late 1920s, and the first six hitters in the 1927 lineup in particular.
The Winners - Reference to the team finishing every season with a winning record since 1993 and won five World Series titles.
The Damn Yankees - Reference to the play and movie by the same name. Used by detractors around Major League Baseball.
The Selfish Team - Reference to winning too many World Series titles, denying other teams from winning.
The Stankees'- Used by detractors
The Evil Empire - Used by detractors. Reference to Galactic Empire of Star Wars and the famous indictment of communism by Ronald Reagan. Coined as a term for the Yankees by Red Sox executive Larry Lucchino after the Yankees got rights to deal with José Contreras. The term has been embraced by many Yankees fans.
The Bronx Zoo - Used by detractors. Reference to the team and the Bronx's turbulent times in the late 1970s, and also the name of a book written by former Yankees pitcher Sparky Lyle about the team's 1978 season. Still used sometimes to describe the organization and stadium. The term has been embraced by many Yankees fans.
The Runnin' Redbirds - Name for the 1980s Cardinals. Reference to their speed and small-ball tactics.
El Birdos - Nickname given to the 1967 World Series Champion Cardinals team by Orlando Cepeda. Reference to the small Hispanic population of St. Louis, as 'El' would suggest singularity in Spanish and 'Birdos' would mean "Birds."
The Rally Birds - Reference to the Cardinals being the top underdog team in 2011 after they're down 10½ games in NL Wild Card on August 25 and won the Wild Card and their 11th World Series title via couple of great late rallies in Game 6.
The Pads - Short version of "Padres". Pronounced "Pods", and also spelled that way.
The Friars - Reference to "padre" meaning father in Spanish, as in a priest.
The Swinging Friars - variation of the above, and also a reference to the "Friar Swinging a baseball bat" logo used on and off by the team.
Friar Faithful - Spin on Friar and the 1998 Padres' "Keep the Faith" campaign to drum up local support for the National League pennant-winning team.
The Pesky Padres - Nickname given in San Francisco Giants official program for their game in San Francisco on July 7, 2011. Refers to the Padres' recent success against the Giants despite generally finishing behind them in the NL West standings, especially their 12-6 record against San Francisco in 2010; the Giants were forced to win a regular-season tie-breaking game to enter the playoffs where they would eventually win the World Series.
The Say May Kids - Nickname given by ex-Padre announcer Matt Vasgersian, in reference to consecutive successful May runs.
The Chaplains - Nickname during the Pacific Coast League days throughout the World War II and the Korean War era.
The Jints (rhymes with "pints", not "mints") - Short version of "Giants".
The G-Men - Reference to nickname for a government agent. Also used for the American football team with whom the baseball club used to share a name and a home stadium, the New York Giants.
Los Gigantes - Spanish for Giants. Used on the team's uniform on Cinco de Mayo of 2007.
The Orange and Black - Reference to the team's colors.
The Orange Nation - Same as above.
The Orange Giants - Same as two lines above.
The Bay Bombers - Geographic nickname, alluding to San Francisco, which is situated by the SF Bay.
The Bays - Short version of above.
The Misfits - Nickname for the 2010 Giants team that won the world series with a group of players that were not considered super stars... Also a play on the "SF" in "miSFits", as seen on many bootleg shirts bearing the band logo of the same name...
The Bulldozers - In reference to winning all six elimination games on the way to their 2012 World Series Champions, especially in the NLDS when they lost first two games at home and won all three elimination games in Cincinnati. Nobody in San Francisco actually calls them this. Perhaps Detroit, St. Louis, and/or Cincinnati fans did...