Dan Carter made his return to a rugby field at home on Saturday when he turned out for his childhood club.
Wales international James Davies will miss the rest of the season after Scarlets confirmed he is to undergo surgery on a hip injury.
Luke Price kicked Ospreys to a stunning 26-24 victory over Ulster and Leinster maintained its 100 per cent Pro14 record by defeating Cheetahs on Sunday (AEDT).
Arno Botha scored a hat-trick as Munster recorded its biggest Pro14 win with a 68-3 hammering of sorry Southern Kings on Saturday (AEDT).
George North opened the scoring for Ospreys on his return from injury on Sunday (AEDT), but a dramatic finish saw Dragons come out on top in their Pro14 derby clash.
Ulster maintained its unbeaten home record in the Pro14 with an emphatic win over Munster, which slipped off the top of Conference B.