After losing the toss and being sent in to bat, the Free Staters slumped to 128 all out as Lyall Petersen led the way with 4/24.
In their response, Madibaz were under pressure at 109/8, but an unbeaten 46 from skipper Travis Ackermann took them across the line in the 44th over.
The team comprised players mainly from the George campus and sports manager Hugo Loubser said they were delighted to secure the title.
“It was not an easy pitch to bat on and we kept losing two wickets at a time,” said Loubser.
“But full credit must go to Travis Ackerman, who showed great patience at the crease to take us across the line.
“This was a big stepping stone for someone who was playing in his first USSA week.”
He added that their success had boiled down to everyone contributing at some stage.
Although Hanno Kotze led the way with the bat to be named the batsman of the tournament, he said the team effort from the whole squad was the common thread in their success.
“The fact that in four of the games we had four different players winning the man of the match award is an indication of how everyone made a contribution,” he said.
There was further recognition for Madibaz players when Kotze was included in the USSA team to compete in a triangular tournament involving the CSA National Academy and Emerging Sri Lanka teams in August next year.
In addition, Kenan Smith (Madibaz A) and Levin Muller (Madibaz B) were included in the USSA team which will compete in the Cricket SA Future Cup in April in Kimberley against SA Rural and SA Colts.
The Madibaz A side ended fifth out of eight teams in the top section, comprising the top-ranked sides at the A week. Madibaz B won the pool made up of teams ranked ninth to 16th from the 2017 tournament.