Ok, this was asked 7 years ago, but I think the best solution here is to forego the new table entirely and just do this as a custom view. That way you're not duplicating data, there's no worry about unique data, and it doesn't touch the actual database structure. Something like this:
CREATE VIEW vw_competitions
AS
SELECT
Id int
CompetitionName nvarchar(75)
CompetitionType nvarchar(50)
OtherField1 int
OtherField2 nvarchar(64) --add the fields you want viewed from the Competition table
FROM Competitions
GO
Other items can be added here like joins on other tables, WHERE clauses, etc. This is most likely the most elegant solution to this problem, as you now can just query the view:
SELECT *
FROM vw_competitions
...and add any WHERE, IN, or EXISTS clauses to the view query.