Chelmsford: Mitchell Marsh further pushed his claim for a place in the Australia Test side with a century on the first day of their final Ashes warm-up at Essex.
Marsh, who also scored a hundred against Kent last week, was unbeaten on 136 as Australia racked up 440-6.
Marsh faces competition from Shane Watson, who made 52, for the first Test against England starting on 8 July.
Opener David Warner crashed a sparkling 94, Adam Voges a composed 49 and wicketkeeper Peter Nevill 78.
If Marsh clarified Australian thoughts through weight of runs, then the make-up of their pace attack for the first Test in Cardiff also became clear, albeit for a different reason.
Brief scores
Australians - 440 for 6 (Marsh 136*, Warner 94, Nevill 78, Watson 52)