England's Alastair Cook celebrates his century during Day Two of the fourth Ashes Test at the Melbourne Cricket Ground yesterday. PIC/GETTY IMAGES

Alastair Cook was urged to capitalise on his drought-breaking, unbeaten century after England's much-maligned old guard finally enjoyed a day to remember in the Ashes series yesterday. At 3-0 down after three Tests, the Ashes urn is already lost to Australia but Cook and Stuart Broad both showed their careers are not over just yet after critics had questioned their place in the England team.