• 1915 — The Conference is founded as the Pacific Coast Conference (PCC) at a meeting at the Imperial Hotel in Portland, Oregon. The charter members were California, Washington, Oregon, and Oregon State.

• 1916 — The PCC begins play and the Conference begins hosting the annual Rose Bowl.

• 1917 — Washington State joins the league.

• 1918 — Stanford is added.

• 1922 — The PCC expands to eight teams with the admission of USC and Idaho.

• 1924 — Montana joins the Conference.

• 1928 — The PCC grows to 10 members with the addition of UCLA.

• 1938 — The Conference hires former FBI agent Edwin Atherton as its Commissioner.

• 1947 — The champion of the Big Ten becomes the designated Rose Bowl opponent for the Pac-12 Champion.

• 1950 — Montana departs to join the Mountain States Conference.

• 1958 — California, USC, UCLA, and Washington become embroiled in “pay-for-play” scandals.

• 1959 — The 1958 scandals lead PCC to disband; California, USC, UCLA, and Washington form a new conference called the Athletic Association of Western Universities (AAWU) with athletics administrator Tomas J. Hamilton as its commissioner. Stanford is added a month later.

• 1962 —Washington State joins the Conference, which informally becomes known as the Big Six.

• 1964 — Oregon and Oregon State are added and the conference is known unofficially as the Pacific Athletic Conference, though still officially the AAWU.

• 1968 — The Conference formally renames itself the Pacific-8 Conference, or Pac-8 for short.

• 1975 — Pac-8, now based in Walnut Creek, Calif.,  allows a second bowl team from the Conference

• 1978 — The Conference adds Arizona and Arizona State from the Western Athletic Conference, becoming the Pacific-10 Conference or Pac-10.

• 1983 — The Pac-10  hires long-time conference executive Thomas C. Hansen as Commissioner.

• 2002 — The Conference’s exclusive arrangement with the Rose Bowl ends when the bowl hosts the national championship game in the Bowl Championship Series  (BCS).

• 2009 — Tom Hansen retires as the longest-tenured Division-I conference commissioner in the country, and the Pac-10 hires Larry Scott, the former head of the Women’s Tennis Association, to replace him.

• 2010 — Pac-10 considers adding up to six teams to the Conference from among Texas, Texas A&M, Texas Tech, Oklahoma, Oklahoma State, and Colorado. The Buffaloes and Utah are extended invitations and both agree to join.

• 2011 — The Conference is renamed the Pac-12, and former Big 12 school Colorado, along with former WAC school Utah, begin play.  To accommodate them, the Conference is divided into South and North divisions.

• 2012 — The Conference debuts the Pac-12 Network, only the third dedicated network in the nation, and the first to completely fund and own its own network outright.

• 2014 — The Pac-12 relocates from Walnut Creek to San Francisco.

• 2021 — Larry Scott’s tenure as commissioner ends. George Kliavkoff, the former president of entertainment and sports for MGM Resorts International is hired to take his place. Soon after, the Pac-12, ACC, and Big Ten announced the formation of a nonbinding “historic alliance.”

• 2022 — USC and UCLA announce their departure from the Pac-12 to the Big Ten Conference beginning with the 2024–25 academic year.

• 2023  — Colorado announces its return to the Big 12 on July 27.

— On August 4, Oregon and Washington announce they will be following UCLA and USC to the Big Ten conference for the 2024 season.

—  Later that day, Arizona, Arizona State, and Utah announce they would be leaving for the Big 12 Conference starting in 2024.

— On September 1, the ACC presidents and chancellors vote to add Stanford and Cal (along with SMU) beginning in 2024.

— On September 11th, Washinton State and Oregon State take the Pac-12 and Commissioner George Kliavkoff to court in Whitman County, Washington, obtaining a temporary restraining order blocking the Conference’s 10 departing schools from holding a meeting and a potential vote of their presidents.

Stay tuned for what figures to be a dramatic denouement…