What does the O2 mean on soccer jerseys and rugby jerseys?

[hidavedavid]

Also why do they call it Rugby 7s?

 

[MattM]

O2 is the brand name for a mobile phone service provider in the UK.

 

[StanJacket]

The O2 is a telecommunications company so when it is on front of the jerseys it means they sponsor that team.

Rugby 7s is a form of Rugby played 7 vs 7 in 7 minute halves. It was developed to provide a short, fast and more entertaining format of the game.

 

[Lildevil225]

O2 is phone company in the UK and its on the shirt because the sponsor of club. (give them money to put it on there as its free advertising,

 

[SS4]

O2 is a communications company sponsoring those teams, rugby 7 is a shorter version of the game played with 7 players per side