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|Home team||Away Team|
||27 - 16||
Saracens have made six changes to their side in preparation for their Heineken Cup quarter-final against Ulster at Twickenham on Saturday.
Mark McCall welcomes back an international contingent who were rested for Saracens' 22-13 victory against London Wasps last weekend.
Brad Barritt and David Stettle return to the Sarries back line while Schalk Brits, Matt Stevens, Alistair Hargreaves and Kelly Brown are included in the starting pack.
Owen Farrell returns to his customary fly-half role with the return of Barritt at centre meaning Charlie Hodgson is demoted to the bench alongside Chris Wyles who loses his place to Strettle.
In the forward line Ernst Joubert, Will Fraser, Mako Vunipola and captain Steve Borthwick are the only players to retain their places as a returning quartet feature.
Ulster travel to London boosted by the return of winger Tommy Bowe who has recovered from injury to make the match-day squad.
The Ireland international has been absent since December when he sustained a knee ligament injury but is named on the bench for Saturday's knock-out fixture.
Meanwhile All Black prop John Afoa is back in the starting XV after missing Ulster's last outing for the birth of his third child.
Luke Marshall starts at centre after recovering from concussion he suffered playing in Ireland's Six Nations encounter with Italy while Iain Henderson is preferred at blindside flanker with Robbie Diack dropped to the bench.
Saracens enter the quarter-final in fine form as they enjoy a four-point lead at the head of the Aviva Premiership while Ulster have won just two of their last five encounters in the RaboDirect PRO12.
Saracens: 15 Alex Goode, 14 Chris Ashton, 13 Joel Tomkins, 12 Brad Barritt, 11 David Strettle, 10 Owen Farrell, 9 Richard Wigglesworth, 8 Ernst Joubert, 7 Will Fraser, 6 Kelly Brown, 5 Alistair Hargreaves, 4 Steve Borthwick (capt) 3 Matt Stevens, 2 Schalk Brits, 1 Mako Vunipola.
Replacements: 16 John Smit, 17 Rhys Gill, 18 Petrus du Plessis, 19 Mouritz Botha, 20 Jackson Wray, 21 Neil de Kock, 22 Charlie Hodgson, 23 Chris Wyles.
Ulster: 15 Jared Payne, 14 Andrew Trimble, 13 Darren Cave, 12 Luke Marshall, 11 Craig Gilroy, 10 Paddy Jackson, 9 Ruan Pienaar, 8 Nick Williams, 7 Chris Henry, 6 Iain Henderson, 5 Dan Tuohy, 4 Johann Muller (capt), 3 John Afoa, 2 Rory Best, 1 Tom Court.
Replacements: 16 Rob Herring, 17 Callum Black, 18 Ricky Lutton, 19 Robbie Diack, 20 Roger Wilson, 21 Paul Marshall, 22 Stuart Olding, 23 Tommy Bowe.
"We go into the game in a good place in both the Premiership and a home quarter-final in Europe. Twickenham is a familiar venue as many of our squad have played here frequently in recent years and of course everyone is really looking forward to the occasion."
"We're playing in the quarter-final of a great competition, at one of the best grounds in rugby, against the side leading the Aviva Premiership and there's going to be a big crowd; it doesn't get any better than that."
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|Friday 13th December|
|20:00||Ospreys vs Castres|
|20:00||Glasgow vs Cardiff Blues|
|Saturday 14th December|
|18:00||Leinster vs Northampton|
|13:35||Toulon vs Exeter|
|15:00||Saracens vs Zebre|
|18:00||Connacht vs Toulouse|
|15:40||Scarlets vs Clermont Auvergne|
|13:35||Benetton Treviso vs Ulster|
|15:40||Perpignan vs Munster|
|Sunday 15th December|
|12:45||Harlequins vs Racing Metro 92|
|15:00||Montpellier vs Leicester|
|15:00||Gloucester vs Edinburgh|
|Saturday 11th January|
|TBC||Ospreys vs Northampton|
|TBC||Castres vs Leinster|
|TBC||Exeter vs Glasgow|
|TBC||Toulon vs Cardiff Blues|
|TBC||Toulouse vs Saracens|
|TBC||Connacht vs Zebre|
|TBC||Harlequins vs Clermont Auvergne|
|TBC||Racing Metro 92 vs Scarlets|
|TBC||Ulster vs Montpellier|
|TBC||Benetton Treviso vs Leicester|
|TBC||Edinburgh vs Perpignan|
|TBC||Gloucester vs Munster|
|Saturday 18th January|
|TBC||Leinster vs Ospreys|
|Sunday 8th December|
|Toulouse 14 - 16 Connacht|
|Leicester 41 - 32 Montpellier|
|Edinburgh 12 - 23 Gloucester|
|Munster 36 - 8 Perpignan|
|Saturday 7th December|
|Northampton 7 - 40 Leinster|
|Ulster 48 - 0 Benetton Treviso|
|Racing Metro 92 8 - 32 Harlequins|
|Clermont Auvergne 32 - 11 Scarlets|
|Zebre 10 - 39 Saracens|
|Exeter 9 - 14 Toulon|
|Friday 6th December|
|Castres 15 - 9 Ospreys|
|Cardiff Blues 29 - 20 Glasgow|
Read the thoughts and opinions of Stuart Barnes with skysports.com