noun
Waseda-Keio match; Sōkeisen
Refers to a sports match between Waseda University and Keio University, especially the traditional baseball rivalry. Also used for other sports such as rugby and soccer.
今年の早慶戦は神宮球場で行われます。
This year's Waseda-Keio match will be held at Jingu Stadium.
早慶戦は日本の大学スポーツ
The Sōkeisen is one of the most famous rivalries in Japanese university sports.
早明戦 is the match between Waseda and Meiji, another traditional university rivalry, but 早慶戦 is more famous.
Compound of 早 (Waseda) + 慶 (Keio) + 戦 (match). The abbreviation 早慶 for the two universities is well established.