A Tasmanian record ninth-wicket partnership and some ill-disciplined batting from a young South Australian side gave the Tigers a stranglehold on the Pura Cup clash at Bellerive Oval.

Five wickets in the hour before stumps on the second day saw the Redbacks plummet to 6-128 chasing the Tasmanian first innings total of 375.

Starting the day at 7-240, the Tigers milked 135 from their final three wickets, largely through a 119-run stand between former Australian one-day player Michael DiVenuto and 22-year-old Xavier Doherty.

The partnership set a new ninth-wicket record for Tasmania in domestic first-class cricket, eclipsing by one run the benchmark set by Brian Davison and Peter Faulkner in 1983-84.

In an innings marked by thundering pull shots and cover drives, DiVenuto was dropped twice before being the last man dismissed, caught on the boundary hitting out at off-spinner Dan Cullen for 91.

Doherty chipped in with 35, a score he later complemented with 2-19 from 10 overs of controlled left-arm spin.

South Australia started steadily in reply, moving to 1-91 before losing 5-37.

The collapse mirrored the first-day capitulation of the Tasmanian middle-order, which sacrificed five wickets for seven runs in fading light against the second new ball.

But where three of the Tigers top six - DiVenuto, Michael Bevan and David Dawson - reached 50, none of the Redbacks recognised batsmen made a significant contribution.

Greg Blewett top scored with an unconvincing 39 and rookie Ben Cameron made 31 in a 54-run partnership for the second wicket, but the inexperienced middle order of Mark Cosgrove (11), Jack Smith (12) and Callum Ferguson (three) melted under the pressure of the persistent but unspectacular Tasmanian attack.

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