Belgian First Division wrap: Zulte-Waregem rise, Anderlecht draw
Jens Naessens' solitary goal in the 84th minute was enough for Waregem to clinch all three points in front of 7,000 fans at the Stadion Den Dreef.
The victory ended Waregem's run of two consecutive defeats, pushing Francky Dury's side ahead of Anderlecht on goal difference and within four points of table-topping Club Brugge.
Goals from David Destorme and Alessandro Cordaro inspired Mechelen to a confidence-boosting 2-0 win on their trip to Gent.
Form was against Mechelen following three successive losses, while Gent were unbeaten in their last four league fixtures.
However that form was thrown out the window courtesy of Destorme and Cordaro, who helped guide Mechelen away from the relegation zone.
Meanwhile, defending champions Anderlecht continued their run of draws on Saturday.
John van den Brom and his charges had drawn against OH Leuven and Genk, and that streak extended to three away to Lierse.
Kanu opened the scoring for Anderlecht on 12 minutes but Dolly Menga's effort four minutes from time earned Lierse a share of the spoils.
In other results on Saturday, Sporting Charleroi moved out of the drop zone with a hard-fought 3-2 win over a 10-man Mons, Lokeren edged Cercle Brugge 1-0, while fourth-placed Genk and Waasland-Beveren could not be separated in a 1-1 draw at Cristal Arena.