"Welcome to a day of rugby"

How Do.

Rugby fan, spreak "Hermann"?
Help my little brother out:

"Welcome to a day of rugby"

How would you say that in German?

Cheers etc.

How would you say it in English?

Sorry, but I'm not sure what context you want to say this in.

I think its some kind of special international rugby one day event so it just for a banner or something.

I thought maybe

Wilkommen zum Rugby Tag ???

You can't really put it that way in German. How about "Heute geboten: Rugby! - Herzlich Willkommen" (Today's specialty: Rubgy - Welcome)
I am assuming he will hang this banner up in a pub or similar.

More likely a large famous stadium, which is why I'm asking the experts.

What about:

Rugby Tag - Herzlich Willkommen!

How about "Wilkommen zur Rugby Zone!" or similar.

With experts I am assuming you mean Rugby experts.
If not it's handbags at 15 paces.

Herzlich Willkommen zum Rugby-Spektakel!