Nigeria U23 international Junior Ajayi netted a pair of goals as CS Sfaxien saw off EO Sidi Bouzid 3-1 in the Tunisian Ligue 1 on Sunday.
The attacker opened scoring in the 35th minute, then bagged his brace in the 83rd minute, while Manser provided the other goal for the Juventus of the Arabs.
The former Shooting Stars frontman has now scored eight goals in the top-flight since he joined CS Sfaxien after the All-Africa Games in September.
Following their ninth win on the spin, CS Sfaxien now top the standings with 55 points through 21 games, but have played one more game than nearest challengers Etoile du Sahel who traveled to Nigeria for a Champions League tie with Enyimba.