Super Rugby will be reduced from 15 sides to 14 in 2021, with the Tokyo-based Sunwolves bowing out at the end of the 2020 season.
In-form Benetton Treviso moved up to second in Pro14 Conference B with a 57-7 rout of the Dragons and Cardiff Blues came roaring back to beat Edinburgh.
Leinster ultimately withstood a spirited Zebre to win 40-24 and go 22 points clear at the top of Pro14 Conference B.
The in-form Cheetahs withstood a barnstorming late rally from Southern Kings to beat their South African rival 40-36 in a Pro14 thriller.
Benetton Treviso continued its superb recent form in the Pro14 by handing Glasgow Warriors a third successive defeat that saw it leapfrogged at the top of Conference A by Munster.
Leinster had James Lowe sent off as its seven-game unbeaten Pro14 run was ended by rival Munster in an eventful derby clash at Thomond Park.