Ross and Lehmann (50 from 74 balls) rescued the Redbacks from a sluggish start after the home side was reduced to 3/8 inside the first two overs.

Right-hander Ross battled bravely after copping a nasty blow to his hand early in his innings to carry South Australia to 9/228 in the State’s first home one-day match in more than six years.

Marsh One-Day Cup Highlights: SA v TAS

But Tigers opener Ben McDermott ensured his side would record its maiden win of the tournament, carving out a mature century to ease Tasmania to the target total with more than three overs to spare.

McDermott, last season's One-Day Cup Player of the Tournament, hit his second one-day ton and finished unbeaten on 103 in a 140-ball innings.

His opening partnership with Caleb Jewell put on 132 for the first wicket to extinguish any real chance of a Redbacks’ run at victory.

SA claimed three wickets late in the piece to build some pressure on the Tigers’ middle order, but it proved only a momentary delay to the final result.

Cameron Valente, Lloyd Pope, returning captain Travis Head and leg-spinner Adam Zampa, who also affected a run out, finished with a wicket apiece for the home side.

The two teams meet again on Tuesday at Karen Rolton Oval.

Final scorecard