Cape Town - Mamelodi Sundowns coach Pitso Mosimane says his team repeated bad habits of not being clinical after Wednesday night's 1-1 draw with Chippa United.
Sundowns were largely in control throughout the contest and took the lead through Lebogang Maboe.
Sibusiso Vilakazi had a chance to make it 2-0 but he spurned the opportunity.
As a result, Meshack Maphangule punished the Brazilians at the death as he struck home from a corner.
'Jingles' told SuperSport TV: "We did the Sundowns thing. Of making so many chances and not sealing it.
"I think if Vila took the chance, the game is buried. We can talk about the ifs or the could haves, should haves. It's not what it's supposed to be.
"We lost the two points, to be honest. I blame myself a little bit. I should have sealed. My last sub-three minutes. We could have used the Champions League experience and sealed it.
"It's a lesson we learn in football. Sometimes it looks okay. We discussed. I said, 'look, I don't see any challenge here'. But then what happened is we started to concede a lot of corners.
"That was the challenge. Then we lost Sammy Seabi with his height. And then I made a mistake by putting on Phaka for Lebo for the last two. Maybe I should have put on Bangaly. Ja, it's my fault."
The Brazilians are next in action on Saturday when they face Bloemfontein Celtic in an MTN8 quarterfinal at the Lucas Masterpieces Moripe Stadium in Pretoria.
Kick-off is at 20:15.