Australia Seals Ashes 3-0, But Cummins & Lyon Doubtful for Melbourne Test

• Australia secured the Ashes by winning the first three Tests against England.
• Captain Pat Cummins expressed "huge satisfaction" with the dominant 3-0 series win.
• Cummins is considering sitting out the Melbourne Test due to his recent back injury and the series being won.
• Premier spinner Nathan Lyon is in doubt for Melbourne after suffering a hamstring injury and being seen on crutches.
• Australia aims to win remaining Tests, with Steve Smith expected to return for Melbourne.

Why It Matters: Australia dominates Ashes 3-0, but key players Cummins and Lyon face fitness concerns for Melbourne.