Kimani provided an assist for Alwanga’s second goal and was a constant menace for the Millers.
Cliff Nyakeya and Clifford Alwanga were on target in the 2-0 win over the Millers.
Nyakeya now wants to add silverware to his list of achievements at Mathare.
The Slum Boys host Chemelil Sugar at Kasarani on December 8 for their season opener.
"I am happy with what we have done this year. There is some huge development," said Kimanzi.
Cliff Nyakeya equalised in the 79th minute from close range.