The first-half goal from Niakhate was the only goal of the game. Mainz won 1-0 (1-0) at home to Red Bull Leipzig in the Bundesliga.
Mainz started the match well and took the lead early when Moussa Niakhate scored in the 12th minute, making it 0-1.
Mainz play Bochum away on Saturday. Leipzig will face Stuttgart at home on Friday.