... https://www.sporttechie.com/oakland-athletics-scrap-season-ticket-system ... news/index?news_item_id=1510511 . 13. J. Lombardo , " NBA Teams Step Up ... playoffs/2014/story/_/id/12263047/super-bowl-xlix-tickets- most - expensive - game ...

... https://slate.com/business/ 2021 / 08 / paris - olympics - 2024 - cost - preparation.html . Graziano , Dan . 2020. " NFL CBA Approved : What Players Get in New Deal , How Expanded Playoffs and Schedule ... news / nhl - nhlpa - ratify - cba - ...