the other. While the Giants have more total wins, head-to-head wins, and World Series titles in their franchise histories, the Dodgers have won the National League West 11 more times than the Giants since the start of division play in 1969. Both teams have made the postseason as a National League wild card twice. The Giants won their first world championship in California in 2010, while the Dodgers won their last world title in 2020. As of the end of the 2020 baseball season, the Los Angeles Dodgers lead the San Francisco Giants in California World Series triumphs, 6–3, whereas in 20th-century New York, the Giants led the Dodgers in World Series championships, 5–1. The combined franchise histories give the Giants an 8–7 edge in MLB championships, overall. Oakland Athletics A geographic rivalry with the cross-Bay American League Athletics greatly increased with the 1989 World Series, nicknamed the "Battle of the Bay", which Oakland swept (and which was interrupted by the Loma Prieta earthquake moments before the scheduled start of Game 3 in San Francisco). In addition, the introduction of interleague play in 1997 has pitted the two teams against each other for usually six games every season since 1997, three in each city (but only four in 2013, two in each city). Before 1997, they played each other only in Cactus League spring training. Their interleague play wins and losses (63–57 in favor of the A's) have been fairly evenly divided despite differences in league, style of play, stadium, payroll, fan base stereotypes, media coverage and World Series records, all of which have heightened the rivalry in recent years. The intensity of the rivalry and how it is understood varies among Bay Area fans. A's fans generally view the Giants as a hated rival, while Giants fans generally view the A's as a friendly rival much lower on the scale. This is most likely due to the A's lack of a historical rival, while the Giants have their heated rivalry with the Dodgers. Some Bay Area fans are fans of both teams. The "split hats" that feature the logos of both teams best embodies the shared fan base. Other Bay Area fans view the competition between the two teams as a "friendly rivalry", with little actual hatred compared to similar ones such as the Subway Series (New York Mets vs. New York Yankees), the Red Line Series (Chicago Cubs