Mathare United’s first chance in the first half came in the 22nd minute when Daniel Otieno attempted a close-range effort but Humphrey Katasi did well to parry away the ferocious shot.
Nzoia’s head coach Ibrahim Shikanda made a change in the 49th minute when he introduced Ian Simiyu for Phillip Muchuma in order to add a sharper cutting edge for the striking department.
Despite the change, the Millers conceded in the 55th minute when Kinyanjui headed past Katasi after connecting to a cross delivered by Tyson Otieno. Three minutes later, Klinsman Omulanga was yellow carded as Salim Ali made a change by introducing John Mwangi for Danson Kago.