Saracens triumphed over Harlequins at Twickenham in December © Getty Images

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Tournaments/Tours: Heineken Cup

Teams: Cardiff Blues | Clermont Auvergne | Edinburgh | Leinster | Munster | Saracens | Toulouse | Ulster

Grounds: Twickenham Stadium

Saracens will run out at Twickenham if they are successful in their bid for a place in the Heineken Cup semi-finals.

The Aviva Premiership champions face Clermont Auvergne at Vicarage Road on Sunday and should they triumph, their last-four match against either Leinster or Cardiff Blues will be staged at the home of English rugby on April 29.

Sarries have already won there this season, beating Harlequins in a Christmas derby, but they face a fierce test to make it back, with Clermont gunning for Europe's top prize. Should Les Jaunards topple their hosts, then their semi-final will be at the Stade Chaban-Delmas in Bordeaux.

Munster or Ulster will contest the other semi-final at Dublin's Aviva Stadium on April 28, with Toulouse or Edinburgh in town. The final is slated for Twickenham on Saturday, May 19.

The Amlin Challenge Cup semi-finals - Toulon or Harlequins against Stade Francais or Exeter and Wasps or Biarritz versus Brive or Scarlets - are scheduled for, respectively, April 27 and April 28 or 29, at the winners' home grounds.