David, who is from Irvine, won silver at the 2011 World U23 Triathlon Championship and so far in 2013 has recorded two top ten finishes in the Dextro Energy Triathlon ITU World Champion Series.
Marc, from Scotstoun, represented Great Britain at the last three European and World Junior Triathlon Championships, winning silver in the 2013 Junior World Championships in London earlier this year.
As an Official Supporter of Glasgow 2014, Atos has been working with the Organising Committee to deliver a range of games management and information systems, including the volunteer portal, the games workforce management system, the accreditation management system and the internet results service.
Meanwhile, tickets have sold out in 10 of the 17 sports to be showcased at Glasgow 2014.
The exclusive sales period for those have already applied for Commonwealth Games tickets closes tonight at 6pm.
Organisers have said they are delighted with the high demand so far but said there was still plenty of chances to buy tickets.