A return to form for Brendon McCullum set it up before more Sydney rain sealed a second-straight BBL victory for the Brisbane Heat.
Shane Watson's Sydney Thunder required 187 for victory at Spotless Stadium, but their chase only lasted 5.3 overs before persistent rain ended proceedings on Tuesday night.
The Thunder were 2-34 at the time, with Watson having just hit spinner Mujeeb Ur Rahman out of the park.
But the hosts were still 15 short of the required total under Duckworth-Lewis calculations, improving the Heat to 2-3 this season.
Former New Zealand captain McCullum had scratched together four, four, eight and 14 in his previous BBL innings.
But the 37-year-old released the pressure with four sixes in a 35-ball 56, while Max Bryant (36 off 23) and Chris Lynn (54 off 30) had the Heat on track for 200-plus.
Brisbane lost 5-4 in 14 deliveries though, with recalled Marnus Labuschagne and retained Matthew Renshaw both falling for second-ball ducks after the Heat had left Joe Burns out of the side.
Heat coach Daniel Vettori said Bryant's ability to play spin so confidently had impressed him, while Lynn's tactics had also proved effective.
"He just wants to settle, turn the strike over and as soon as he gets a match-up he's happy with ... he's aggressive again," Vettori told Fox Sports.
"The way we played, I was really pleased with. We thought par score was 150, 160."
Optimistic Thunder batsman Callum Ferguson fancied his side's chances if they had returned.
"We were confident; it was certainly a good batting wicket from what we could see," he told Fox Sports.
"We weren't able to get away like we would've liked and that last wicket stretched it out (the DLS total) as well."
It was a wet end to English pair Jos Buttler and Joe Root's time with the Thunder (3-4), who will now depart on international duties.
They will be replaced by New Zealand's Anton Devcich and England allrounder Chris Jordan, who will both be available to play the Adelaide Strikers on January 13.
Brisbane return home to play the Melbourne Renegades on Thursday.