Erasmus was included in the panel of twenty umpires selected for officiating in matches during the 2015 ICC Cricket World Cup, hosted by Australia and New Zealand. He stood in the opening match between New Zealand and Sri Lanka at the Hagley Oval in Christchurch on 14 February 2015. Erasmus went on to stand in the quarter-final between the hosts, Australia, and Pakistan, at the Adelaide Oval on 20 March 2015. He was also the TV umpire for the 2015 ICC Cricket World Cup Final in Melbourne on 29 March 2015.