Charlesworth had retired from international hockey coaching, a day after his Kookaburra team lifted the World Cup in The Hague, in June this year.
It was a fitting finale to a long and illustrious career, with the Australians taking the trophy in style, beating host nation the Netherlands in emphatic fashion.
Since taking over as coach of the men's team in 2009, Charlesworth has led the Kookaburras to World Cup and Commonwealth Games titles, an Olympic bronze and four Champions Trophy gold medals.
In 2014, Charlesworth also received the FIH Order of Merit, in recognition of his unique personal achievements.
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Caldas, on the other hand, seemed to turn everything into gold from 2012 to 2014. The former Argentinian international took over as head coach to the Netherland's women in 2010, although he had been assistant coach when they won gold at the Beijing Olympics in 2008.
The World Cup, won in front of 15,000 adoring fans in The Hague, was the pinnacle of Caldas's career with the women's team.
Caldas, who is contracted to the Dutch Hockey Board (KNHB) until after Rio 2016, has now moved to coach the national men's team and his replacement as head coach to the women, Sjoerd Marijne, paid him the ultimate compliment when he said he planned to "change very little from the way Max did things.