Tournament organisers have confirmed that the new 16-team PRO rugby competition will be called the United Rugby Championship.
South African clubs the Sharks, Stormers, Lions and Bulls will enter the league next season alongside the teams who competed in last year's Guinness PRO14.
It will see the return of a single-standing table with quarter-finals, semi-finals and a grand final at the end of the regular campaign.
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Under the agreement, the South African sides will be eligible to qualify for European competitions.
