Kolkata Knight Riders' skipper, Jacques Kallis, has urged his team to come up with an improved performance in the main round of Champions League Twenty20 championship.

Despite losing their final qualifier against Somerset by 11 runs, Kolkata Knight Riders still managed to make it to the 10-team main tournament as the third highest ranked side in the six-team qualifying round on better net run rate.

"To be brutally honest, it was a poor performance. We fielded poorly, didn't bat well. We need to improve our performance," Kallis said.

"We are happy to qualify but still have some areas to work on. It was tight in the end," he added.

The veteran South African all-rounder picked Holland's most experienced batsman Ryan ten Doeschate for special praise. Chasing a victory target of 167, Doeschate (46) waged a lone battle to help Kolkata reach their qualification target of 153 runs.

"Ryan played an exceptional innings to get us through. When we lost a couple of wickets up front, we realised we didn't need to be heroes," he said.

Asked about regular skipper Gautam Gambhir's chances of playing in the main round of Champions League, Kallis said, "It looks like Gautam Gambhir will be ready. He is a world-class player and everyone in the team is waiting for his return."

Somerset captain Alfonso Thomas said they would look to replicate the success of qualifiers in the main round of CLT20.

"Guys did a great job for us. We want to replicate the success of qualifiers in the main event. We are waiting on the likes of Jos Butler and Craig Kiewstter to boost our side."