South Korea 2014 Incheon Asian Games - Rugby ball on sheet selvedge

South Korea released a set of stamps in 2014 to mark the Incheon Asian Games, none of the stamps feature rugby, however, the colour control  of the stamp sheet selvedge were printed as icons representing sports items, and the first one is a rugby ball. Rugby sevens is one of the sports in the Incheon Asian Games.

Tonga 2014 Rugby Sevens

Tonga released on 17 September 2014 a souvenir sheet celebrating 40 years of participation in the Commonwealth Games. The souvenir sheet contains 1 non-value label and 5 stamps featuring sports, one of them being the rugby sevens.
Note: The Glasgow games in 2014 is the 20th edition of the Commonwealth Games.

Cook Islands 2014 Rugby

Cook Islands released on 23 June 2014 a set of 24 stamps on the theme of tourism. 4 of the highest value, at $4.10 each, in the set feature sports, and one of them is rugby.

Samoa 2014 40 Years of Commonwealth Games - Rugby Sevens

On 16 September 2014 Samoa released a set of 4 stamps to mark 40 years of participation in the Commonwealth Games. One of the stamps feature Rugby Sevens. Each of the stamp value is issued in a sheet of 5 together with a label without value; the sheet selvedge is decorated with the flags of all the countries in the Commonwealth.
Note: The Glasgow games in 2014 is the 20th edition of the Commonwealth Games.