It means 75% of the quarter-finals have gone with home advantage with four-times champions Toulouse accounting for seven of those home wins, Munster Rugby six and Leicester Tigers five.
And Munster are the only team to have won three away quarter-finals, at Stade Jean-Bouin against Stade Francais Paris (2002), at Welford Road against Leicester Tigers (2003) and at Gloucester Rugby in 2008.
Toulouse have triumphed twice on the road, at Dax in 1997 and in Spain at Estadio Anoeta against Biarritz Olympique in 2011, and defending champions Leinster Rugby at Toulouse in 2006 and Harlequins in 2009.
Nine other clubs have managed it once each with Ulster Rugby at Thomond Park against Munster and ASM Clermont Auvergne at Vicarage Road against Saracens joining that elite list last season.
7 - Toulouse
6 - Munster
5 - Leicester Tigers
4 - Leinster
3 - Stade Francais Paris, Biarritz Olympique
2 - Scarlets, London Wasps, Cardiff Blues, Perpignan, Northampton Saints
1 - Brive, Bath Rugby, Pau, Ulster Rugby, Colomiers, Gloucester Rugby, Castres Olympique, London Irish, Saracens, Edinburgh Rugby
3 - Munster
2 - Toulouse, Leinster
1 - Brive, Scarlets, Perpignan, Biarritz Olympique, Leicester Tigers, Bath Rugby, Northampton Saints, Ulster Rugby, ASM Clermont Auvergne.