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But Edwards said she had no concerns about those results, saying the criticism was "unjustified" and that it is difficult to dip in and out of captaincy in that way.

But there will be concerns around her workload when taking on the captaincy, as England's most important batter and one of their most experienced bowlers.

Eight years on and Heather Knight has found herself in the same unfortunate position around the captaincy.

Key has wisely decided that, with the first Test in Perth seven months away, adding the white-ball captaincy to his injury-ravaged talisman's workload was one risk he was not willing to take.

Brook will take charge in both one-day internationals and T20s - ending speculation England could split the captaincy for the two formats.