Western Australia are on the back foot heading into the final day of their Marsh Sheffield Shield match against New South Wales at the SCG.

Western Australia's top order has dug in late on the second day of their Marsh Sheffield Shield clash with New South Wales, with a result looking unlikely on a benign SCG pitch.

Western Australia's bowlers have toiled hard on the opening day of their Marsh Sheffield Shield clash with New South Wales at the SCG.

Western Australia have announced three changes to their Round 4 Marsh Sheffield Shield squad set to take on New South Wales in Sydney next week.