Borders 22-20 Cardiff Blues
Glasgow 19-30 Connacht
Leinster 30-33 Edinburgh
Scarlets 27-22 Warriors
Ulster 37-13 Dragons
Ospreys 33-26 Munster
The Scarlets victory over the Warriors mean they head the table with twelve points from three games, and remain the only unbeaten side in the championship.
The Warriors' first defeat in the competition sees them slip to third spot behind Edinburgh.
The Ospreys' memorable victory over Munster means they are in fifth spot in the table, with nine points from their three games.
The Blues and Dragons both suffered away defeats, seeing them in eight and tenth places respectively.