Wigmen are leveled on two points with the four winning teams from the weekend, including Lae Snax Tigers who were on bye.
However, Wigmen took up the number one spot due to points for and against.
Wigmen defeated Simbu Lions by a huge margin, 42-12, in Mendi.
In second place is Goroka Lahanis and Mt Hagen Eagles sits on third spot after defeating Waghi Tumbe 14-10 at Rabiamul Oval in Mt Hagen.
Rabaul Gurias is fourth on the ladder after a close game, beating Enga Mioks 6-2 at Kalabond Oval in Kokopo.