Chase Field, Baseball stadium in Downtown Phoenix, US

Chase Field is a retractable-roof baseball stadium in Downtown Phoenix, home of the Arizona Diamondbacks. The roof slides shut in about four minutes, and since 2019 the field has been synthetic turf rather than natural grass. A low outfield wall with a yellow line tops the dirt and grass field, and tiered seating rises around it. Above the outfield seats, a dark structure carries the central video board, flanked by smaller screens, beneath the roof's steel truss edge.

Chase Field opened on March 31, 1998, as Bank One Ballpark, when the Diamondbacks debuted as an expansion team; it was the first stadium in the United States with a retractable roof over natural grass. Bank One held the naming rights until its merger with JPMorgan Chase, and the ballpark took the Chase Field name during the 2005 season, not in September. It hosted Games 1, 2, 6 and 7 of the 2001 World Series, which the Diamondbacks won in seven games.

The Arizona Diamondbacks play their home games here, and fans gather to watch professional baseball in a climate-controlled environment. Many visitors explore the concourses and dining areas before and during the game, treating the venue as a social gathering space.

The stadium maintains a climate-controlled interior throughout the season, keeping the temperature around 75 degrees Fahrenheit (24 degrees Celsius) even when the roof is open. Visitors will find entry gates on multiple sides of the building, and most seating areas are accessible via stairs or elevators.

A swimming pool measuring approximately 8,500 square feet (790 square meters) sits in right-center field and allows visitors to watch the game from this area. Guests who book this section can swim or lounge poolside during the match.