The San Diego Padres are an American professional baseball franchise based in San Diego, California. The Padres compete in Major League Baseball (MLB) as a member club of the National League (NL) West division, along with the Arizona Diamondbacks, Colorado Rockies, Los Angeles Dodgers and San Francisco Giants. Founded in 1969, the Padres have won the NL pennant twice: in 1984 and 1998, losing in the World Series both times. As of 2015, they have had 14 winning seasons in franchise history. The Padres and the Los Angeles Angels of Anaheim are the only Major League Baseball teams in California to originate from California; the Athletics are originally from Philadelphia (and moved to the state from Kansas City), and the Dodgers and Giants are originally from Brooklyn and New York City respectively. The Padres are the only major professional sports franchise to be located in San Diego, following the relocation of the Chargers to Los Angeles in 2017.

Petco Park

The San Francisco Giants are an American professional baseball franchise based in San Francisco, California. Originally known as the New York Gothams, the team moved to San Francisco in 1958. The Giants are a member of the National League West Division of Major League Baseball (MLB) and as of October 29, 2014, the current World Series champions. As one of the longest-established professional baseball teams, the franchise has won the most games of any team in the history of American baseball, and any North American professional sports team. The team was the first major league team based in New York City, most memorably playing at the legendary Polo Grounds. They have won 23 National League pennants and appeared in 20 World Series competitions – both records in the National League. The Giants' eight World Series Championships rank second in the National League (the St. Louis Cardinals have won 11) and are tied for fourth overall with the Boston Red Sox behind the New York Yankees with 27, the Cardinals, and the Oakland Athletics with nine. The Giants have played in the World Series 20 times (14 times in New York, 6 times in San Francisco) but boycotted the event in 1904. Playing as the New York Giants, they won 14 pennants and 5 World Series championships behind managers such as John McGraw and Bill Terry and players like Christy Mathewson, Carl Hubbell, Mel Ott, Bobby Thomson, and Willie Mays. The Giants' franchise has the most Hall of Fame players in all of professional baseball. The Giants' rivalry with the Dodgers is one of the longest-standing and biggest rivalries in American baseball. The teams began their rivalry as the New York Giants and Brooklyn Dodgers, respectively, before both franchises moved west for the 1958 season. The Giants have won 6 pennants and 3 World Series championships since arriving in San Francisco. The 3 championships have come in 2010, 2012 and most recently in 2014, having defeated the Kansas City Royals 4 games to 3 during the 2014 World Series.