Question: What year was the facility that was replaced by the arena that was briefly known as Paige Sports Arena opened?

Context paragraphs:
Magness Arena: The Magness Arena is a multi-purpose collegiate sports arena in Denver, Colorado.  It was built from 1997 to 1999 as part of the Daniel L. Ritchie Center, the sports complex at the University of Denver.  It is home to the Denver Pioneers ice hockey and basketball teams.  It replaces the former DU Arena which was razed in 1997 to make way for the Ritchie Center.  Magness Arena opened September 1999, one month before the Pepsi Center.  The arena was voted, "Best New Sports Venue" by "Westword" in 2000.

TipsArena Linz: TipsArena Linz (formerly Linzer Sporthalle and Intersport Arena) is an indoor sports arena, located in Linz, Austria.  The capacity of the arena is 6,000 people, for tennis and football events and 2,500, for athletics.  The arena opened in September 1974.

RASTA Dome: RASTA Dome is a sports arena in Vechta, Germany.  The arena serves as the home venue of SC Rasta Vechta of the Basketball Bundesliga.  The arena opened on October 12, 2012 and hosted its first event on October 13, 2012.  In 2013, the arena, which had an original capacity of 2,000 spectators, was expanded to accommodate 3,140 fans in order to meet minimum size requirements for the Basketball Bundesliga.

Baxter Arena: Baxter Arena (previously known under the working name UNO Community Arena) is the sports arena owned and operated by the University of Nebraska Omaha located in Omaha, Nebraska.  Completed in 2015, Baxter Arena serves as the home of several of the university's sports teams, known as the Omaha Mavericks.  The arena opened to the public on October 23, 2015 when the Mavericks men's ice hockey team hosted Air Force, winning 4–2.

Viejas Arena: Viejas Arena at Aztec Bowl (formerly named Cox Arena), located on the San Diego State University (SDSU) campus in San Diego, California, is the home of the San Diego State Aztecs men's basketball and women's basketball teams.  Viejas Arena opened its doors to the campus and community in July 1997 and seats 12,414 for basketball and up to 12,845 for concerts.  The facility also hosts SDSU's commencement ceremonies.  Previously, the Aztecs played at Peterson Gymnasium also on the SDSU campus.  However, the men's basketball team played most of their home games at the San Diego Sports Arena prior to Viejas Arena's construction.

Mizzou Arena: Mizzou Arena is an indoor arena located on the south side of the campus of the University of Missouri in Columbia, Missouri.  The facility, home to the school's men's and women's basketball teams, opened in November 2004 and replaced the Hearnes Center as the school's flagship indoor sports facility.  The arena also serves as the Columbia-Springfield market's venue for well-known 'arena' acts such as Rascal Flatts, Luke Bryan and the Eagles.  The arched-roof building seats 15,061, and is located just south of Hearnes and Memorial Stadium.  The arena is host to Missouri State High School Activities Association championships for basketball and wrestling.  The arena was briefly known as Paige Sports Arena.

Hearnes Center: Hearnes Center is a 13,611-seat multi-purpose arena in Columbia, Missouri.  The arena opened in 1972.  It is currently home to the Missouri Tigers' wrestling and volleyball teams as well as the school's gymnastics and indoor track & field teams.  It was home to the University of Missouri Tigers basketball team before Mizzou Arena opened in 2004.

Reed Green Coliseum: Reed Green Coliseum is an 8,095-seat multi-purpose arena in Hattiesburg, Mississippi, United States.  Affectionately referred to by fans and local sportswriters as "The Yurt", it opened on December 6, 1965 and is home to the University of Southern Mississippi (USM) men's basketball team, women's basketball team and women's volleyball team.  Prior to the Coliseum, USM's teams played at the USM Sports Arena, a 3,200-seat arena opened in 1949.

Pico Rivera Sports Arena: The Pico Rivera Memorial Sports Arena is a multipurpose arena located in Pico Rivera, California in the United States.  It can seat a range of 5000 to 6250 patrons, depending on the event configuration.  The arena is used for concerts, rodeos, professional wrestling and boxing.  Notably, it used to host Circus Vargas during their tour of the West Coast.  Famous for hosting many presentations of Antonio Aguilar, a Mexican singer, and his family.  Adjacent to Bicentennial Park is the 6,000 seat Sports Arena.  Famous for its Mexican rodeos (chareadas) and Latin entertainment, the Pico Rivera Sports Arena is a popular recreation spot for the Los Angeles area Hispanic community.  This facility was built in 1979 and is reputed to be the largest Mexican rodeo ring in the country.  An average of 25 shows, preceded by a traditional Mexican rodeo, are held at the Sports Arena every year.

Los Angeles Sharks: The Los Angeles Sharks were an ice hockey team that played in the World Hockey Association from 1972 to 1974.  Their primary home arena was the Los Angeles Memorial Sports Arena but they sometimes played at the Long Beach Sports Arena when the Sports Arena had other contractual obligations.  After the 1973–74 season, the franchise moved to Detroit to become the Michigan Stags and again mid-season to Baltimore to become the Baltimore Blades.

Supporting paragraphs: Mizzou Arena Hearnes Center
Answer: 1972