Delany plays at fly-half but can also cover fullback. Prior to playing for the Chiefs, he played for the Highlanders and also for Bay of Plenty in the ITM Cup. Delany was chosen as one of 4 new caps to the New Zealand team for their End of Year of tour of 2009, playing one match on the tour. In 2011 he signed for the Panasonic Wild Knights. In 2012, due to injuries to both starting and back up five-eighths Colin Slade and Lima Sopoaga for the Highlanders, Delany signed with his former team to fill the position till they returned. Whilst still under contract with the Panasonic Wild Knights, he played on loan at Clermont Auvergne, but signed a two-year deal with the French club in April 2013. On 19 February 2015, Delany travelled to England to join Newcastle Falcons in the Aviva Premiership on a three-year deal.