Leaders Racing Bafoussam drew with titleholders Cotonsport Garoua 0-0 in the top fixture on Wednesday.
After six games in the league's final eight-team phase, undefeated Bafoussam have 12 points, while Cotonsport are in second place with 11.
Union Douala are in third place with 10 points but have a game at hand.
However, Union will have the chance of becoming the new leaders if they beat Fovu Baham on 29 August.
The biggest game in Cameroonian football, which is between Tonnerre Yaounde and city rivals Canon will also be played on that day.
In Wednesday's other game, Bamboutos, who are fifth, drew 0-0 with 10-man Sable Batie, who have qualified for the group stages of the Confederation Cup.
Primeiro Agosto have qualified for the semi-finals of the Angolan Cup after beating arch-rivals Petro Atletico 4-2 on penalties.
Primeiro overcame a two-goal deficit to draw level within regulation time.
Petro took the lead through Avelino Lopes and Dias Caires, before Primeiro fought their way back into the game through Lolo and Stopirra, who scored after Zambian defender Elijah Tana had been sent-off.
Also through to the semi-finals are Desportivo Huila, who beat Brilhantes Kassima 5-1.
The defending Cup holders Inter Clube, also remain in the race, defeating Petro Huambo 2-1.
The remaining quarter-final between Sporting Cabinda and Sonangol Namibe will be played on Wednesday.
Champions Enyimba have moved within six points of leaders Dolphins, after the two sides drew 1-1 on Wednesday.
But Enyimba, who have 50 points, have a game in hand and could further reduce the gap if they beat third-placed Iwuanyanwu Nationale on 25 August.
Three days before that tie, Iwuanyanwu will face fourth-placed Kano Pillars.
Iwuanyanwu have 49 points and lead Pillars by a two-point margin.