Newcastle, Northampton, Leicester and Benetton booked their places in the Challenge Cup quarter-finals on Saturday.
Three law variations covering red card replacements, captain's challenge and goal-line drop-outs will be used in the inaugural Guinness PRO14 Rainbow Cup.
Ireland centre Bundee Aki has been handed a four-game ban for his high tackle on England's Billy Vunipola in Saturday's Six Nations clash.
Munster will play either Leinster or Ulster in the PRO14 final after their 20-17 win over Connacht gave them an unassailable 12-point lead at the top of Conference B.
There were a host of standout performers across the Premiership and PRO14 as the Six Nations took a weekend off.
Scarlets kept alive their Champions Cup qualification hopes with a bonus-point win over Benetton while Ospreys edged past Zebre.
Team news and the players looking to impress in Saturday's Guinness PRO14 action.
Andy Farrell has added Tadhg Beirne, Josh van der Flier and fit-again James Lowe to his Ireland squad to face Wales in Cardiff on Sunday.
After an inconsistent 2020, will Andy Farrell's Ireland be able to challenge Six Nations favourites France and England in 2021?
Ireland forwards coach Paul O'Connell admits it is a major blow to lose the "X-factor" qualities of Caelan Doris on the eve of the Six Nations.
Uncapped Munster scrum-half Craig Casey and Ulster tighthead Tom O'Toole have been included in Andy Farrell's Ireland Six Nations squad.
Rhys Webb responded to his omission from Wales' Six Nations squad with two tries in Ospreys' impressive 26-20 win at Connacht in PRO14.
We take a look at where European rugby can go next, after the Champions Cup's temporary suspension was confirmed on Monday.
We round up all of the action from Saturday's four matches in the PRO14 as Ospreys, Cardiff, Munster and Zebra all won.
Wasps dominate our team of the week after they dismantled Exeter Chiefs, while Connacht and Bristol provide three players each...
Connacht won in Dublin for the first time since September 2002, while Ulster maintained their 100-per-cent start in the PRO14 by beating Munster.
Ian Madigan helped himself to 22 points in Ulster's 32-19 Guinness PRO14 derby win over Connacht at the Sportsground.
Bristol kept their Champions Cup hopes alive with a 27-18 bonus-point win over Connacht on Sunday.
Connacht claimed a losing bonus point as they were defeated 26-22 by Racing 92 in their Heineken Champions Cup opener in Paris.
Ahead of Sunday's four Heineken Champions Cup clashes, we take a look at each club's form, team news and key players...
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