Australia limited-overs star Chris Lynn warmed up for the upcoming KFC Big Bash League season with a swashbuckling T20 century in Queensland Premier Cricket on Sunday, while suspended duo Steve Smith and David Warner both scored half-centuries in the Kingsgrove Sports Twenty20 Cup in Sydney.

Lynn was in fine touch for Brisbane side Toombul, with the explosive right-hander smashing 15 sixes on his way to a brutal 113 from just 45 deliveries in a victory over South Brisbane at Fehlberg Park.

The Queenslander also turned out for Toombul on Saturday, hitting four sixes in a quickfire 19-ball knock of 37 as his side were defeated by Ipswich / Logan at home.

But it was his innings on Sunday that turned heads ahead of the start of BBL|08 later this month, with Lynn bringing up three figures from just 37 balls with eight overs remaining in Toombul's innings.

He then cleared the rope on another two occasions, before finally holing out for 113 from the bowling of Jamie Eccles.

It was Lynn's first score of greater than 50 since he led all run-scorers at the JLT One-Day competition at the start of the summer, with the 28-year-old going through a run of outs recently for Australia in both 50-over and T20 cricket.

In Sydney, Smith was in a particularly devastating mood, with the former Australia captain hitting five fours and three sixes on his way to an entertaining 61 from 33 deliveries.

His efforts ensured Sutherland successfully chased down Sydney's decent total of 5-198 with two balls to spare at Drummoyne Oval.

Zak Crawley had earlier scored an unbeaten century from 42 balls to help guide Sydney to their big score.

A more patient Warner seemed to be on track to lead Randwick Petersham to victory over St George as he brought up his half-century with the required target of 140 within sight at Hurstville Oval.

But he fell for 61 and his teammates couldn't pick up the slack as St George held on for a six-run triumph to progress to the conference final and knock out Randwick Petersham from the competition.

The conference finals will be held at the SCG on Sunday December 16, with the final to be played under lights at the hallowed ground the same night.