South Australia captain Michael Klinger stroked a fluent century to deliver his side a bonus point victory and conclusively end Queensland's unbeaten start to the domestic season in the limited-overs match at Adelaide Oval.
The Bulls had been less commanding in one-day games than in the Sheffield Shield, but a seven-wicket loss with 68 deliveries remaining was still a surprise against a Redbacks team that has struggled for results by comparison.
The Redbacks won the match in the field, dropping the Bulls to 6 for 84, from which depths only a partial recovery was possible. Steve Paulsen and Michael Neser did their best, but the early damage inflicted by Jake Haberfield, Daniel Christian and Kane Richardson was too severe. The left-arm spinner Aaron O'Brien also played a role, taking the new ball and getting James Hopes lbw for a first-ball duck.
Granted an undemanding chase, the Redbacks began with plenty of intent to win the extra point for reeling in the target within 40 overs with Klinger and Daniel Harris hitting the gaps frequently. Harris' exit allowed for an attractive contribution from Callum Ferguson. Once he and the centurion Klinger were dismissed, James Smith clumped the winning runs.