Chase Field

Chase Field, formerly Bank One Ballpark, is a retractable-roof stadium in Downtown Phoenix, Arizona. It is the ballpark of Major League Baseball's Arizona Diamondbacks. It opened in 1998, the year the Diamondbacks debuted as an expansion team. Chase Field was the first stadium built in the United States with a retractable roof over a natural grass playing surface, although it has used artificial turf since 2019. History The park was built during a wave of new, baseball-only parks in the 1990s. Although nearly all of those parks were open-air, it was taken for granted that a domed stadium was a must for a major-league team to be viable in the Phoenix area. Phoenix is by far the hottest major city in North America: the average high temperature during baseball's regular season is , and game-time temperatures well above are common during the summer. Stadium funding In the spring of 1994, the Maricopa County Board of Supervisors approved a 0.25 percent increase in the county sales tax to pay for their portion of the stadium funding. That happened during a huge county budget deficit and lack of funding for other services. The sales tax was very unpopular with local citizens, who were not permitted to vote on funding a baseball stadium with general sales tax revenue (use of public subsidies for stadium projects was prohibited by a 1989 referendum). The issue was so controversial and divisive that, in August 1997, Maricopa County Supervisor Mary Rose Wilcox was shot and injured while leaving a county board meeting by Larry Naman, a homeless man, who attempted to argue in court that her support for the tax justified his attack. In May 1998, Naman was found guilty of attempted first-degree murder. The cost of the stadium was estimated at $279 million in 1995, but cost overruns, in part because of rising prices for steel and other materials, pushed the cost to $364 million. As part of the stadium deal, the Diamondbacks were responsible for all construction costs over $253 million. The extra expenses, combined with the Diamondbacks and the other expansion franchise, the Tampa Bay Devil Rays, not being allowed to share in national MLB revenue for their first five years of operations, left the Diamondbacks in a less-than-desirable financial situation, which came back to haunt team founder and managing partner Jerry Colangelo and his group.