Victory over Stade Francais moved Racing 92 to within four points of Top 14 leaders Montpellier but Toulon slipped to defeat at Oyonnax.
Despite losing three matches on the spin, England will not be knocked off their path to Rugby World Cup success, says Dylan Hartley.
Rory Best's future in the Ireland side is unclear, with the captain set to be 37 by the time the Rugby World Cup rolls around.
Supporters vocally expressed their disappointment with England's Six Nations demise on Saturday, but Eddie Jones will not lose any sleep.
While Ireland claimed the Grand Slam, Wales earned second spot in the Six Nations with a tense win against France.
Despite not playing their best rugby, Scotland coach Gregor Townsend was pleased at how his side battled back to beat Italy in Rome.
Captain Rory Best praised the entire Ireland squad after they recorded a famous 24-15 truimph over England on St Patrick's Day.
There were wins for the Lions and the Stormers on Saturday, as the Sunwolves and the Blues stayed anchored to the bottom of the standings.
Eddie Jones said England will "stick to the process" after they slumped to a 24-15 loss to Ireland, their third loss in a row.
It all started so well for Eddie Jones and England, but three successive defeats have halted a stunning run of form.