Bristol Bears continued their fine form with a comfortable victory over Harlequins, who beat Premiership leaders Exeter Chiefs last week.
Joe Marler escaped punishment from the officials on Saturday in an incident that seemingly left Alun Wyn Jones bemused.
Eddie Jones was angered by the decisions that left England hanging on for victory with 13 men against Wales in the Six Nations.
Indiscipline again threatened to undermine Eddie Jones' England against Wales, but their capacity to thrill was also on display.
Sloppy early play and second-half indiscipline cost Wales against England, says Alun Wyn Jones.
England maintained their Six Nations title bid with victory against Wales, aided by a scoring return for wing Anthony Watson.
The Sharks moved top of the Super Rugby standings with a resounding win over the Jaguares, while the Bulls ended their wait for a victory.
Exeter Chiefs have returned to the Premiership summit, while Wasps and Saracens also celebrated victories.
Matthew J Watkins won 18 caps for Wales in the 2000s, before battling cancer, and his death left his former clubs "deeply saddened".
The Hurricanes played the latter stages of their loss to the Blues with 12 men as ill-discipline cost them in a 24-15 Super Rugby defeat.