[8] He made his debut as an ODI umpire in the match between Kenya and Canada at the Gymkhana Club Ground in Nairobi on 18 October 2007.

[11] Erasmus made his debut as an umpire in Tests when he took the field for the match between Bangladesh and India at the Zohur Ahmed Chowdhury Stadium in Chittagong from 17 to 21 January 2010.

[14] Erasmus was one of eighteen umpires who stood in matches during the 2011 ICC Cricket World Cup, hosted by India, Sri Lanka and Bangladesh.

[15] He made his umpiring debut in the Cricket World Cup match between Kenya and New Zealand at Chennai on 20 February 2011.

[17] 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.

[24] Erasmus went on to stand in the 2017 ICC Champions Trophy Final between arch-rivals India and Pakistan at The Oval in London on 18 June 2017.

[25][26] Erasmus stood in his 100th first-class match when he umpired the Test between England and the West Indies at Lord's in London from 7–11 September 2017.