Wasps hang on for a narrow win against champions Exeter Chiefs, who fall to a third straight Premiership defeat.
English Rugby Union
Northampton score three quick tries to turn around a half-time deficit to win 25-17 against London Irish, who look destined to be relegated.
Wales wing Josh Adams scores his 10th Premiership try of the season to help Worcester to a 25-15 victory over local rivals Gloucester.
Matt Toomua produces a virtuoso display on his first start at fly-half for Leicester to steer Tigers to a 33-18 win over Harlequins.
Audio & Video
Watch the quirkier moments from the Six Nations, featuring Joe Launchbury's basketball skills, a referee in the way and that controversial TMO decision.
The television match official should have been given frame-by-frame footage of Gareth Anscombe's disallowed try, says ex-Lions centre Jeremy Guscott.
Around the Web
Rugby Union commentaries
A rundown of all the latest BBC radio commentaries online.
Get score and result alerts in Sport app
All the action, reactions, news, views and excitement of the Six Nations direct to your phone via the BBC rugby news alerts.
How to get into Rugby Union
How to get into rugby union - through the age groups up to the 15-player game or try rugby sevens, which made its Olympic debut in 2016.
What are the basics of rugby union?
Want to brush up on your rugby knowledge? Let BBC Sport be your guide to the unique bits of rugby union.