relegation zone
noun [ C usually singular ] uk/ˌrel.ɪˈɡeɪ.ʃən ˌzəʊn/ us/ˌrel.əˈɡeɪ.ʃən ˌzoʊn/
（足球联赛的）降级区
the part of a football division consisting of the three teams with the lowest number of points who will go down to a lower division if they stay in one of those positions