expression, godan verb (-ru)
be promoted to makuuchi
Sumo term: a juryo-division wrestler rises to the top makuuchi division.
彼は先場所で勝ち越し、幕に上がった。
He had a winning record last tournament and was promoted to makuuchi.
From 幕 (maku, 'curtain') + に + 上がる (agaru, 'to rise'), referring to the curtain that separates the top division from lower ranks in sumo.