Australian batsman Usman Khawaja might be questioning why he ever got on the plane to Bangladesh after the horror week he's had.

The 30-year-old was dropped from the side after a disappointing performance at No. 3 in Dhaka, which included running himself out and horribly mistiming a shot to get out when Australia needed him most in the second innings.

Selectors made the call to axe him and throw Steve Smith in at No. 3 instead, meaning Khawaja had to fulfil the dreaded 12th man duties.

The left-hander shifted from arguably the best job in the cricketing world to the worst in a matter of days, finding himself appointed as Australia's chief umbrella-man for the match.

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Khawaja stood in the sweltering Chittagong heat with a giant parasol to keep David Warner and Steve Smith cool during the drinks break - and boy did it look awkward.

The umbrella work seemed to help as Smith and Warner put on 93 for the second wicket. Warner finished the day on 88 not out alongside Peter Handscomb on 69 as Australia reached 225 for two at stumps, 80 runs behind Bangladesh's first innings effort.