Lockwood's national representative debut was in 2009 when he was selected in the Australian U23 men's eight who contested the
World Rowing U23 Championships in Racice and placed fourth. At the 2011 World Championships, he won silver in the men's coxed pair with
James Chapman and
David Webster as cox. At the
2012 London Olympics, Lockwood won a
silver medal in the Australian men's coxless four with
Drew Ginn, James Chapman, and
Josh Dunkley-Smith. Ginn's presence in that crew gave it a lineage to the successful Australian M4- crews of the 1990s that were known as
Oarsome Foursomes. In 2013 he won the silver medal at the
World Championships in the men's four with
Alexander Lloyd,
Spencer Turrin and Josh Dunkley-Smith. At the
2015 World Rowing Championships on
Lac d'Aiguebelette,
Aiguebelette in France he won the silver medal in the men's coxless four in a crew with Spencer Turrin and Josh Dunkley-Smith and
Alexander Hill. In 2016 along with Josh Dunkley-Smith,
Joshua Booth, and Alexander Hill, Lockwood was selected in the Australian Men's
Coxless four to compete at
Rio 2016. They won their heat and semi-final and took the silver medal behind Great Britain in the final. ==Personal==