The decisive moment came late in the match when Mbekezeli Mbokazi produced a stunning long-range strike to seal the win and send the Soweto giants through.
The result extended Pirates' unbeaten run to 11 matches across all competitions, a remarkable turnaround from their early-season struggles.
Ouaddou's men had suffered two successive league defeats at the start of the campaign, sparking criticism and calls for his dismissal.
Rather than being disheartened, the Moroccan tactician remained composed, insisting he understood the scrutiny that comes with managing a club of Pirates' stature.
The coach, who recently steered Pirates to the MTN8 title, now appears well on his way to adding another cup run to his résumé. Yet he maintains that chasing records is not his motivation.
"I'm not looking for records. I'm just enjoying the moment with my players, trying to give the best for the club. Trying to get results and play some good football," Ouaddou said.
"It is not easy every time because the opponents analyse you and don't let you do what you want. I'm not looking for records but to do a good job for the club and the players."
South Africa's four representatives in CAF club competitions now have a clearer picture of the road ahead after the continental football governing body confirmed key dates for the upcoming campaign.
Sekhukhune United have reportedly completed the signing of goalkeeper Melusi Buthelezi following his recent departure from Orlando Pirates.
Former Orlando Pirates striker Tshegofatso Mabasa believes PSL defenders should brace themselves for a difficult time against Stellenbosch winger Langelihle Phili.
Melusi Buthelezi has penned a heartfelt farewell to his supporters following his recent exit from Betway Premiership Champions Orlando Pirates.
