Bristol v London Irish
Kick-off 3pm tomorrow
Venue Memorial Stadium
Last year Bristol 19, London Irish 19
Last five matches Bristol: LWLLW Irish: LLLWL
Dog-eat-dog at the bottom but Bristol are showing a bit of pedigree again after their dreadful start. Paul Johnstone once again is a stand-in hooker, and Ben Sturnham and David Rees return. Declan Danaher is back for Irish, who may be overtaken at the foot of the Premiership tomorrow.
Harlequins v Wasps
Kick-off 3pm tomorrow
Venue The Stoop
TV Sky Sports 2, 2.30pm
Last year Quins 33 Wasps 13
Last five matches Quins: WLWWL Wasps: LWWLD
Paul Burke's return is a relief for Quins, who have tried three different No10s in the last month but Keith Wood's neck injury gives Tani Fuga the hooker's shirt.
Leeds v Northampton
Kick-off 2.30pm tomorrow
Venue Headingley
Last year Leeds 6 Northampton 26
Last five matches Leeds: LWWWD North: LWWLL
Leeds continue to defy logic, their comeback at Wasps last week another example of the growing spirit at Headingley. Braam van Straaten continues at No10. Bruce Reihana has a first start for a Saints side clobbered by international call-ups.
Newcastle v Bath
Kick-off 2.30pm tomorrow
Venue Kingston Park
Last year Newcastle 36 Bath 9
Last five matches New: WLWLL Bath: DLLLW
Joe Shaw returns after a lengthy absence for Newcastle, who capitulated at Bristol last weekend. Andy Williams may make a first start at scrum-half for Bath for nine months following knee surgery and Matt Perry also returns after injury.