The Stars lost seven wickets for 19 runs during their run-chase.
In the chase, the Karachi Kings lost their last five wickets for just five runs.
For the United, Luke Ronchi scored a half-century.
Perera and Vishwa Fernando put on 78 runs for the last wicket.
Sidhu felt that one shouldn't blame Pakistan for the attack.
Both the Akmal brothers, Kamran and Umar, had good outings.
The Tigers were rusty in all the three departments.
Embuldeniya picked up a five-wicket haul.
Usman Shinwari was expensive, but defended 16 runs in the last over.
It seems Karthik has fallen behind in the race to Pant to make the cut for the WC.