Harlequins produced a stunning upset as they reached the Champions Cup semi-finals by beating French heavyweights Bordeaux-Begles 42-41.
Marcus Smith provided the magic as Harlequins edged into the Investec Champions Cup quarter-finals.
It's been eight years since the Premiership had more than three clubs make it to the Champions Cup quarter-finals, but there remain six in play this season.
The RFU has apologised for an officiating error after Harlequins held off a storming Bath comeback for a win that lifted them back into the Premiership play-off places.
England attack coach Richard Wigglesworth has told Sky he is hopeful Marcus Smith and Alex Mitchell will be fit to face Ireland in Six Nations Round 4.
England pair Marcus Smith and Alex Mitchell to join up with the rest of the squad on a three-day Six Nations training camp to continue rehabilitating their injuries.
Marcus Smith has been ruled out of England's Six Nations opener against Italy in Rome due to a calf injury, coach Kevin Sinfield has confirmed.
Jarrod Evans' missed conversion with the last kick of the game saw Harlequins edged out 20-19 by Leicester on Friday.