 Despite the absence of MLB history in the Phoenix area and an overwhelming roof design, much of the interior was still built with all of the hallmarks of retro, similar to Progressive Field.Although Chase Field was not the first retractable-roof ballpark in history, it was the first in a wave of four retractable-roof ballparks (opening within just four years) to follow the retro-modern pattern.During the second decade of retro, Petco Park and Kauffman Stadium followed the construction and renovation concepts of Progressive Field and Angel Stadium, respectively.