vs. Chicago White Sox) and the Freeway Series (Los Angeles Dodgers vs. Los Angeles Angels). The Giants and A's enjoyed a limited rivalry at the start of the 20th century before the Yankees began to dominate after the acquisition of Babe Ruth in 1920, when the Giants were in New York and the A's were in Philadelphia. The teams were managed by legendary leaders John McGraw and Connie Mack, who were considered not only friendly rivals but the premier managers during that era, especially in view of their longevity (Mack for 50 years, McGraw for 30) since both were majority owners. Each team played in five of the first 15 World Series (tying them with the Red Sox and Cubs for most World Series appearances during that time period). As the New York Giants and the Philadelphia A's, they met in three World Series, with the Giants winning in and the A's in & . After becoming the San Francisco Giants and Oakland A's, they met in a fourth Series in resulting in the A's last world championship (as of 2021). New York Yankees Though in different leagues, the Giants have also been historical rivals of the Yankees, starting in New York before the Giants moved to the West Coast. Before the institution of interleague play in 1997, the two teams had little opportunity to play each other except in seven World Series: , , , , , and , the Yankees winning last five of the seven Series. The teams have met five times in regular season interleague play: In 2002 at the old Yankee Stadium, in 2007 at Oracle Park (then known as AT&T Park), in 2013 and 2016 at the current Yankee Stadium, and in 2019 at Oracle Park. The teams' next regular season meetings will occur in 2023. In a September 2013 meeting, Yankees 3B Alex Rodriguez hit a grand slam, breaking Lou Gehrig's grand slam record. In his July 4, 1939 farewell speech ending with the renowned "Today, I consider myself the luckiest man on the face of the earth", Yankee slugger Lou Gehrig, who played in 2,130 consecutive games, declared that the Giants were a team he "would give his right arm to beat, and vice versa". Baseball Hall of Famers As of 2021, the Major League Baseball Hall of Fame has inducted 66 representatives of the Giants (55 players and 11 managers) into