The Arizona Diamondbacks (often shortened as the D-Backs) are an American professional baseball team based in Phoenix, Arizona. They play in the West Division of Major League Baseball's National League. Since the team's inception in 1998, the franchise has played home games at Chase Field, formerly known as Bank One Ballpark. The ballpark was renamed in 2005 as a result of Bank One Corporation's merger with JPMorgan Chase & Co. The Diamondbacks have won one World Series championship (in 2001), becoming the fastest expansion team in the major leagues to win a championship, doing it in only the fourth season since the franchise's inception in the 1998 Major League Baseball season.

Chase Field

The Cincinnati Reds are an American professional baseball team based in Cincinnati, Ohio. The Reds compete in Major League Baseball (MLB) as a member club of the National League (NL) Central division. They were a charter member of the American Association in 1882 and joined the NL in 1890. The Reds played in the NL West division from 1969 to 1993, before joining the Central division in 1994. They have won five World Series titles, nine NL pennants, one AA pennant, and 10 division titles. The team plays its home games at Great American Ball Park, which opened in 2003 replacing Riverfront Stadium. Bob Castellini has been chief executive officer since 2006.