Leicester Tigers director of rugby Richard Cockerill makes a mammoth 12 changes to the side that beat Gloucester 17-12 last Saturday.
Only Adam Thompstone, captain Louis Deacon and Ben Youngs retain their places as Cockerill rests his key players ahead of next week's Heineken Cup clash with Ospreys.
Tom Croft makes his return to the starting XV at flanker following nine months on the sidelines with a neck injury.
2 min: Tigers are awarded an early penalty at the breakdown on the halfway line. A lovely kick from Toby Flood puts Tigers in the corner. The line-out leads to a driving maul but Tigers eventually give a penalty away and their chance to score is gone.
8 min: PENALTY 3-0 It is Tigers who go behind as the returning Croft is penalised for not rolling away at the breakdown in front of the posts. Former Tiger Andy Goode makes no mistake as he strikes the ball cleanly and watches it fly over.
10 min: Tigers have the chance to restore parity as they win a penalty just inside the Warriors' half. But instead of going for goal, Flood opts for touch, which results in Tigers giving away a penalty at the breakdown and missing their chance to equalise.
14 min: TRY 8-0 Tigers now find themselves further behind as lovely footwork from Warriors' Jon Clarke sees him sidestep his way through the Tigers backline. He off-loads to Chris Pennell who plays in David Lemi in the corner and the winger dives over the line in the left corner. Goode's kick drifts wide of the posts.
20 min: PENALTY 11-0 Martin Castrogiovanni is pinged for not releasing the ball in front of the posts on his 10 metre line and Goode drills his kick straight between the sticks.
21 min: Castro finds himself in the bin. After a long TMO decision, the prop is shown a yellow card by referee JP Doyle for not using his arms in a tackle on Dean Schofield.
23 min: PENALTY 14-0 Croft is penalised once again at the breakdown on his 10 metre line, to the left of the posts. Goode strikes it clean as a whistle and Tigers are now 14 points behind. They desperately need some ball.
33 min: Fourteen-man Tigers look under pressure as Warriors continue to pile on the pressure just outside Tigers' 22. But a crunching tackle from Logovi'i Mulipola forces hooker Aleki Lutui backwards and wins a penalty which allows Tigers to clear. It is 15-a-side again now as Castro returns to the field.
38 min: TRY 14-5 Tigers get another penalty, and Flood opts to put Tigers in the corner with a little more than a minute on the clock. The gamble pays off as the ball is eventually spun out right to Mat Tait who beats his man and off-loads to Scott Hamilton, who gets over in the corner. Flood's kick again falls short.
40 min: It is a double whammy though, as Goode is given a yellow card for a knee in the back on Hamilton at the try and Tigers are awarded a penalty back on the halfway line for it. But, for the third time, Flood's goal attempt falls short of the posts.
h-t min: Worcester 14 Tigers 5
45 min: Not the start Tigers would have wanted as they give away two penalties in their own half in quick succession. With Goode in the bin, full-back Pennell takes it. His first hits the post and the second drifts wide. Tigers are lucky not to have gone even further behind.
50 min: TRY 14-12 Tigers are awarded a penalty on the right touch on the Warriors 22 but Flood opts to kick for the corner instead of taking the points. Tigers get a good rolling maul going and, after forcing two penalties, Tigers are awarded a penalty try. Flood quickly knocks it over.
63 min: Doyle does Tigers a favour as he pulls the play back for a penalty to Worcester on Tigers 10 metre line, despite the home side seemingly having a decent advantage. Goode, back from the bin, puts it wide. Despite being second best for the majority of the game, Tigers can still win this.
79 min: TRY 14-19 It is an incredible finish as Doyle awards Tigers their second penalty try of the game after Worcester are adjudged to have collapsed the scrum on their own line with just seconds to spare. Flood converts and Tigers have somehow managed to get out of jail.