Former Scotland and Newcastle Falcons lock Doddie Weir has quickly proven a source of inspiration for Rob Burrow following his diagnosis.
Vereniki Goneva will remain in the Premiership after Harlequins signed the 35-year-old Fiji international.
Northampton Saints took the final Premiership play-off spot despite losing to Exeter, while Bath secured Champions Cup rugby next term.
Having spent six successive years in the top flight, Newcastle Falcons were relegated from the Premiership on Saturday.
Anthony Watson was back in Premiership action on Friday, but Newcastle Falcons' time in the top flight looks to be coming to an end.
Newcastle Falcons are running out of time to save themselves from Premiership relegation after losing at home to Leicester Tigers.
Exeter Chiefs earned a home semi-final with four games to spare, while Saracens scored a late try to hurt Newcastle's survival hopes.
Two tries from Will Skelton helped Premiership title hopefuls Saracens fight back to beat Harlequins 27-20 at London Stadium on Saturday.
Brett Connon held his nerve with a late penalty to give Newcastle victory at Wasps, while Exeter also did the Falcons a favour.
Newcastle Falcons closed the gap on second-bottom Worcester Warriors to five points with a 17-6 victory in the Premiership on Sunday.
Saracens' defeat on Friday left the door ajar for Exeter Chiefs, who downed Newcastle Falcons to go top of the Premiership.
Leicester Tigers limped to defeat at Saracens, meaning the victors once again sit top of the Premiership.
Both Edinburgh and Glasgow Warriors are through to the European Champions Cup quarter-finals due to the former's 19-10 win over Montpellier.
All four Pro14 sides in European Rugby Champions Cup action on Saturday secured victories, three coming against French opposition.
Mark Wilson has signed a new four-year contract with Newcastle Falcons after some brilliant displays for England in November.
Bristol Bears ended 2018 with a huge win over Newcastle Falcons, while Bath moved up to fifth with victory over Leicester Tigers.