evenly matched contest; close game
Describes a competition where the opponents are of equal strength, making the outcome uncertain. Often used in sports, games, and other contests.
Today's game was an evenly matched contest.
The two teams are evenly matched in ability.
互角 is an adjective/noun meaning 'equal' or 'evenly matched', while 互角勝負 is a noun specifically referring to a contest or match that is evenly matched.
Compound of 互角 (ごかく, 'equal, evenly matched') and 勝負 (しょうぶ, 'match, contest').