World Rugby has announced the officials for the 2018 Americas Rugby Championship, which runs from Jan. 27 to March 3.

The tournament, which the USA won in 2017, returns for its third incarnation with the same six teams. Argentina's team, Argentina XV, is a non-cap squad and games involving the Argentines will not be full test matches.

The rest are all full tests. In addition, the Jan. 27 game between Uruguay and Canada will double as a Rugby World Cup qualifier game. That will be the only ARC game refereed by an official outside of the participating nations — Ireland's Andrew Brace will officiate. 

That game will also be the only one with neutral assistant referees. The rest of the games will use referees from the participating nations and host-union-appointed ARs.

World Rugby High Performance 15s Match Official Manager Alain Rolland said: "The Americas Rugby Championship is an important arena to test the very best emerging international officiating talent across North and South America.

“This selection on merit following a robust review of performance, demonstrates that the unions are committed to developing international referees, who we hope to see officiating at the highest level, including future Rugby World Cups, in years to come.”