Manu Tuilagi will miss England's RBS 6 Nations campaign after the Leicester centre revealed his recovery from a groin injury was progressing slower than originally thought.
Leicester Tigers kept alive their slim hopes of a European Champions Cup quarter final spot by romping to a bonus point victory at home to the Scarlets.
Wasps' recent improvement continued with a win over Gloucester while there were also post-Christmas Aviva Premiership wins for London Irish, Bath, Leicester, Saracens and Northampton.
Martin Castrogiovanni's expletive-ridden tirade after Toulon's defeat by Leicester on Sunday night is to be investigated, Champions Cup organisers have announced.
Leicester boss Richard Cockerill refused to be drawn into a war of words on Sunday night following an astonishing verbal outburst by ex-Tigers prop Martin Castrogiovanni after the Italian's Toulon side suffered a 25-21 European Champions Cup defeat at Welford Road.
Manu Tuilagi's groin injury will be assessed by Leicester on Monday with the club expecting the centre to miss England's autumn Test opener against world champions New Zealand next month.
Leicester centre Manu Tuilagi may miss England's November internationals after pulling up with a recurrence of his groin injury during his side's 25-18 European Champions Cup win over Ulster.
England's injury problems continue to mount after the loss of Tom Youngs for the entire autumn was compounded by growing concerns over the long-term health of Geoff Parling.