[1] His first match in Super Rugby was between the Queensland Reds and Melbourne Rebels at Suncorp Stadium in March of that year.

[2] Gardner was appointed to the IRB Junior World Championship in 2012 and 2014, and took charge of the semi-final between England and Ireland in 2014.

[4][5] In 2015, Gardner was selected as an assistant referee at the 2015 Rugby World Cup.

[6] He refereed the 2018 Super Rugby Final between the Crusaders and the Lions in Christchurch.

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