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'''Seri Kejuaraan Pasifik''' ({{lang-en|'''Pacific Championship Series'''}}, disingkat '''PCS''') adalah liga ''[[esports]]'' profesional untuk tim ''[[League of Legends]]'' yang berada di [[Republik Tiongkok|Taiwan]], [[Hong Kong]], [[Makau]], dan [[Asia Tenggara]] (tidak termasuk [[Vietnam]]). PCS diumumkan secara resmi oleh [[Riot Games]] pada 19 Desember 2019<ref name=":0">{{Cite web|last=Hao|first=Dexter Tan Guan|date=19 Desember 2019|title=Pacific Championship Series created as combination of League's LMS and LST|url=https://dotesports.com/league-of-legends/news/pacific-champion-series-announced-as-combination-of-lms-and-lst|website=Dot Esports|language=en-US|access-date=4 November 2021}}</ref><ref name=":1">{{Cite web|last=Nicholson|first=Jonno|date=19 Desember 2019-12-19|title=Riot Games announces Pacific Championship Series|url=https://esportsinsider.com/2019/12/riot-games-pacific-championship-series/|website=Esports Insider|language=en-GB|access-date=2021-11-044 November 2019}}</ref><ref name=":2">{{Cite web|last=competitive|first=heart If something is|last2=it|first2=I. am interested in|date=2019-12-20|title=Riot merges the LMS and the LST to form one large Pacific Championship Series in 2020|url=https://www.invenglobal.com/articles/10006/riot-merges-the-lms-and-the-lst-to-form-one-large-pacific-championship-series-in-2020|website=InvenGlobal|language=en|access-date=2021-11-04}}</ref> setelah [[Garena]] mengumumkan rencana untuk menggabungkan dua liga yang telah ada, yaitu League of Legends Master Series (LMS) dan League of Legends SEA Tour (LST).<ref name=":6">{{Cite web|title=全新聯賽將於 2020 年啟動，聯合LMS及LST全面提高戰區戰力|url=https://2019.lms.garena.tw/news/content/3384|website=《英雄聯盟 LoL》官方網站 - 全球第一多人連線遊戲，挑戰你的電子競技夢想！|language=zh-TW|access-date=2021-11-04}}</ref> Saat ini, peserta PCS terdiri dari sepuluh tim yang terdiri dari empat tim Taiwan, dua tim Hongkong, dan empat tim dari Asia Tenggara.<ref name=":3">{{Cite web|date=2019-12-22|title=League of Legends Pacific Championship Series teams revealed for 2020|url=https://www.dailyesports.gg/league-of-legends-pacific-championship-series-teams-revealed-for-2020/|website=Daily Esports|language=en-US|access-date=2021-11-04}}</ref><ref name=":4">{{Cite web|title=Here are the teams for the League of Legends Pacific Championship Series (PCS) 2020 {{!}} ONE Esports|url=https://www.oneesports.gg/lol/here-are-the-teams-for-the-league-of-legends-pacific-championship-series-pcs-2020/|website=www.oneesports.gg|language=en-US|access-date=2021-11-04}}</ref>
