The last six clashes between the two clubs in all competitions have all been won by the home side on the day, whilst Gloucester have not won at Vicarage Road since November 2008.
Saracens impressive run continued with an eleventh successive win at Harlequins on Saturday. Last season’s Premiership finalists are playing in a 4th Premiership semi-final, and beat Northampton 21-19 at this stage last season.
Gloucester Rugby have reached the Premiership semi-finals for the first time since 2007/08, but are winless in their last four away games. Gloucester’s only defeat in their last seven semi-final encounters in all competitions was at home to Leicester in the Premiership on 18 May 2008.
The two sides have met just once before in semi-finals with Gloucester winning 50-9 at Kingsholm in the Premiership in May 2007. Gloucester have played in one previous semi-final at Vicarage Road, losing 15-19 there to Leicester in the 2001 Heineken Cup.
Referee: Andrew Small (56th Premiership game)
Live on ESPN HD.