Yanga SC were defeated 3-0 by Kagera Sugar on Wednesday in a Vodacom Premier League (VPL) tie at Uhuru National Stadium in Dar es Salaam.
Yanga fell behind after a Yusuf Mhilu's strike early in the first half before conceding the other two in the second half, when Ahly Ramadhan and Peter Mwalyanzi scored the other goals.
The capitulation marked Luc Eymael's first game in charge since he was appointed as Mwinyi Zahera's permanent replacement this week.
Mhilu scored the first goal in the 13th minute and the Sugar Millers kept their slim lead into the half-time break.