Golden Arrows coach Steve Komphela has given credit to Bloemfontein Celtic for their performance after beating his team 5-0 at Dr Molemela Stadium on Sunday.
It was the first heavy score defeat to be suffered by any team in the PSL this season.
Siwelele's victory came after they lost their first league game against Orlando Pirates last week with goalkeeper Jackson Mabokgwane making his debut in great style for Phunya Sele Sele.
Ndumiso Mabena, Mzwanele Mahashe, Harris Tchilimbou, Andile Fikizolo and Menzi Masuku scored the goals for Celtic.
Komphela believes Celtic's game plan in their attacking system worked very well for them.
"It was a nice game to watch, very entertaining, highly offensive from both teams, a lot of goals as well, unfortunately we couldn't score," said Komphela.
"One compliment should go to Celtic for their performance and goals scored. We just have to learn from the mistakes we committed because every time we committed an error, they punished us.
"They are clear with regards to how they attack, their counter-attack is lethal, they are accurate going forward. Every time we lost possession we were playing into their hands, we couldn't counter-press to stop that."
Celtic are set to take on Mamelodi Sundowns in the MTN8 quarterfinals at Lucas Moripe Stadium on Sunday. Arrows' next game is in the league against Chippa United on August 24.