Usman Khawaja's brilliant comeback year has entered the record books after he helped Australia to 1-89 after the first session of the day-night Test against West Indies.
Khawaja went to the break unbeaten on 50, with David Warner the only man out for the hosts after he was caught behind on 21.
With Josh Hazlewood joining Pat Cummins on the sideline with general soreness, Australia are desperate to build a big first-innings total in Adelaide.
And Khawaja has given them a promising start, with Thursday's knock taking him past 1000 runs for the calendar year.
He joins Sir Donald Bradman and Adam Voges as Australians to pull off the feat at age 35 or older.
Khawaja is also set to finish the year with the most runs by someone of his age, surpassing Sir Donald Bradman's mark of 1025 from his final year in Test cricket in 1948.
Khawaja's half-century is the ninth time he has passed 50 this year, striking six boundaries along the way on Thursday.
After Warner was the early aggressor, Khawaja stamped his authority with a crunching pull shot for four off West Indies' enforcer Alzarri Joseph.
He later hit debutant Marquino Mindley for two straight boundaries, before the quick limped off the field clutching at his leg.
It summed up another tough afternoon for the tourists, who lost veteran pacer Kemar Roach (hamstring), seamer Jayden Seales (knee), allrounder Kyle Mayers (shoulder) and first-drop batter Nkrumah Bonner (concussion) to injury before the match.
Earlier, Australia had made the call to bring in Michael Neser for his second Test, after opting not to risk Hazlewood during a cluttered summer schedule.
Mitchell Starc was cleared to play despite an equally taxing workload in Perth, and is joined by Neser, Nathan Lyon and Scott Boland in the attack.