After trailing 3-0 for most of the first half, Madibaz scored two tries just before the break to lead 12-3 at halftime and then stepped up the pace in the last 20 minutes, crossing for four more tries.
They will now regroup for the final match of three during an intense opening week in the competition when they play Rhodes at the Madibaz Stadium in Port Elizabeth on Monday (6.30pm).
The winners produced the Player that Rocks in fullback Simon Bolze, who went over for two tries as they asserted their dominance in the second half.
“We knew it was going to be tough because Walter Sisulu are a quality side,” said Bolze.
“It wasn’t that easy playing into the wind in the first half, but in the second half we opened it up and are proud of our efforts in the end.”
Another Madibaz player, wing Josiah Twum-Boafo, took the Steers Kinging Moment award, also crossing for two tries. He said the result was reward for the efforts they had put in during the build-up to the competition.
“We have worked very hard for this and the preparation we did in our pre-season training programme is starting to pay off.”