Tense Shield finale looms at the Gabba

Career-best bowling from South Australia youngster Liam Scott has set up an intriguing run chase in the Sheffield Shield match against Queensland in Brisbane.

The Bulls were bowled out for 191, leaving SA a victory target of 253 from 50 overs.

The Redbacks reached 1-26 off six overs at tea before an extended day-four final session at the Gabba.

The 21-year-old Scott collected 5-46 off 16 overs for his maiden five-wicket haul of an 11-match first-class career.

Attempting to keep the rain-marred contest alive, Queensland scored at 4.5 runs per over on Saturday, shedding wickets at regular intervals in the process.

Only middle-order batsman Sam Truloff made a significant contribution for the Bulls, scoring 64 in an 86-ball innings.

Former Test pair Joe Burns and Matt Renshaw were unable to build on starts, scoring 27 and 12 respectively.

Both sides donned black armbands in memory of Test legends Shane Warne and Rod Marsh, who both passed away within the past two days.

SA must win to keep their wafer-thin Shield hopes alive.