The 17-year-old, who will make his senior Island début next month in the inter-insular against Guernsey, will represent Hampshire under-18s in the English Golf Union’s south regional championship at Gerard’s Cross on 23 August.
Hampshire junior golf manager Tommy Flynn said: ‘Gyles has been on Hampshire’s School of Excellence golf scheme for two years and has progressed well.
We have kept a close eye on his development and he has come good, so now is the time to put him into inter-country competition.
‘The EGU matches are seven-player squads with six playing foursomes in triangular matches.
There are morning and afternoon matches against the other counties, so it’s a packed schedule.
‘Gyles is a year young for the age group and if he continues to play well he could go on to become the leading player in the team next season.
I’m sure he will enjoy the experience and hopefully it will help his game further.
He is new to the squad and I’m confident he will do well for the county.’ Island under-18 champion Robin has already impressed in Hampshire this season by finishing second in the boys’ championship (U18) and third in the youth (U21) section.