Saracens v Worcester: Teams

Lock Chris Jack returns for Saracens for their Guinness Premiership clash with Worcester at Vicarage Road.

Jack's return is one of three changes in the Saracens pack as fellow internationals Cobus Visagie and Richard Hill also start.

Hill and Visagie were rested for the last match against Bath while Jack returned home to New Zealand for a family commitment.

Sarries are without Andy Farrell due to a rib injury and Neil de Kock, who has a hamstring problem. Kevin Sorrell misses out once again with his ankle injury.

Cencus Johnston is rested and Dan Scarbrough, who is back in full training after a four-month absence, is not considered.

Director of rugby Alan Gaffney said: "This will be a very tough match especially as Worcester's ability belies their position in the Premiership.

"They have had a very competitive pack for many years and in Craig Gillies they have a player who is one of the best lineout forwards in the competition.

"They have also really strengthened this season with the arrival of Greg Rawlinson, Sam Tuitupou, Loki Crichton and Rico Gear.

"This is an important time in the Premiership and although you cannot win the competition just yet, the wrong results in the next few rounds of matches can put you out of contention."

Worcester have recalled back row forward Tom Wood as they make only one change for the trip to Watford.

Wood replaces the injured Drew Hickey at blindside flanker, with director of rugby Mike Ruddock naming an otherwise unchanged starting line-up.

"Saracens are a very dangerous team with a lot of good quality about the forward pack," said Ruddock.

"Neil de Kock and Glen Jackson are the stand out guys in the league at the moment, they make them tick. They can rip us to pieces if we let them play but we go there eager to perform and get a positive result."

Saracens: 15 Brent Russell, 14 Richard Haughton, 13 Rodd Penney, 12 Adam Powell, 11 Francisco Leonelli, 10 Glen Jackson, 9 Alan Dickens, 1 Nick Lloyd, 2 Fabio Ongaro, 3 Cobus Visagie, 4 Chris Jack, 5 Hugh Vyvyan, 6 Kris Chesney, 7 Richard Hill (capt), 8 Ben Skirving

Replacements: 16 Andy Kyriacou, 17 Tom Mercey, 18 Tom Ryder, 19 Paul Gustard, 20 Moses Rauluni, 21 Gordon Ross, 22 Edd Thrower

Worcester: 15 Thinus Delport, 14 Rico Gear, 13 Dale Rasmussen, 12 Sam Tuitupou, 11 Miles Benjamin, 10 Loki Crichton, 9 Matt Powell, 1 Darren Morris, 2 Aleki Lutui, 3 Tevita Taumoepeau, 4 Greg Rawlinson, 5 Craig Gillies, 6 Tom Wood, 7 Pat Sanderson (capt), 8 Kai Horstmann

Replacements: 16 Callum Black, 17 Matt Mullan, 18 Will Bowley, 19 Netani Talei, 20 Ryan Powell, 21 James Brown, 22 Chris Pennell