Warner: Khawaja opener, Head at 5 'worse for England' in Adelaide Ashes

• David Warner backs Usman Khawaja to open for Australia in the Adelaide Ashes Test.
• Warner believes Khawaja opening and Travis Head at No. 5 would be most effective against England.
• Khawaja's return to the team depends on his recovery from back spasms.
• Travis Head has a strong record at No. 5, scoring 8 of his 10 Test centuries from that position.
• Australia has struggled to find a stable opening pair since Warner's retirement.

Why It Matters: Australia faces a crucial selection dilemma impacting their Ashes strategy.