Short answers, pulled from the story.
Historic Crew Stadium opened on the 15th of May 1999 as Columbus Crew Stadium, with a match between the Crew and the New England Revolution. It was the first stadium built specifically for a Major League Soccer club.
The venue carried the Mapfre name after the Crew sold naming rights to the Madrid-based insurance company Mapfre on the 3rd of March 2015, under a five-year deal. When that agreement expired in December 2020, the Crew renamed the stadium rather than sign a new sponsor.
The stadium cost US$28.5 million to build, paid entirely with private funds from Crew owner Lamar Hunt and his Hunt Sports Group.
Historic Crew Stadium originally seated 22,555 spectators, a number reduced to 20,455 after a stage was added to the north end zone, with room to expand toward 30,000 for concerts. By 2023, the listed capacity for a soccer match stood at 19,968.
The Columbus Crew moved to a new stadium, later named ScottsMiracle-Gro Field, which opened on the 3rd of July 2021. Historic Crew Stadium is now the Crew's training center, home to the OhioHealth Performance Center and the club's second-level team, Columbus Crew 2.
Dos-a-cero was the rallying cry U.S. soccer fans adopted after the men's national team won four of five consecutive World Cup qualifiers against Mexico at the stadium by a 2-0 score. The streak ended on the 11th of November 2016, when Mexico won 1-2, its first victory in Columbus.