The Buccaneers needed all three points from their penultimate league clash of the season to move above current league leaders Mamelodi Sundowns on goal-difference.
Neither side was able to break the deadlock at the Amstel Orlando Arean, meaning that Ouaddou's charges now need a win against Orbit College in their final Premiership encounter.
Anything less than a win would see the Brazilians claim a ninth successive top-flight title.
Speaking after the draw, a downbeat Ouaddou admitted they let themselves down by failing to claim the title in front of their own fans.
"We wanted to collect maximum points, and I want to be clear that we were not thinking about the title because a lot of people were celebrating before the game even started. They got out the champagne before the end," Ouaddou said on IOL.
"We are clear: the target was three points in front of our fans. It didn't happen.
"But if you remember what I said before the start of the season, the title would probably be decided in the last game. And we are still in that conversation."
While Pirates are on the verge of a first league title in 14 years, Orbit College are fighting for their top-flight title, in 15th place with 24 points, level with Marumo Gallants, and one point adrift of Chippa United in 13th spot.
Orlando Pirates coach Abdeslam Ouaddou says the future of his young squad is bright, if they can get over the line and win the Betway Premiership this season.
AmaZulu coach Arthur Zwane has outlined his ambitions to win silverware with the Betway Premiership club next season.
Kaizer Chiefs have the opportunity to equal their best points tally in the last 11 seasons when they face Chippa United in their final Betway Premiership match at Moses Mabhida Stadium on Saturday.
Orlando Pirates head coach Abdeslam Ouaddou has praised the progress made by midfielder Abdoulaye Mariko during his debut season in the Betway Premiership.
