Harlequins (16) 22
- Try: Hopper
- Con: Evans
- Pens: Evans 4
- Drop goal : Evans
Worcester (14) 19
- Tries: Lemi, Classens
- Pens: Goode 3
Nick Evans landed a late drop-goal to give Premiership leaders Harlequins a narrow victory over Worcester Warriors.
David Lemi's early try gave Warriors a surprise lead, before Worcester's Andy Goode and Harlequins stand-off Evans exchanged a succession of penalties.
Matt Hopper went over to help the hosts fight back to lead 16-14 at half-time.
Errie Classens' try levelled the game for Warriors before Evans' 74th minute drop-goal won it for the hosts, leaving Worcester with only a bonus point.
Worcester built good early pressure and a neat move from right to left saw Goode set up Lemi to go over in the corner for his eighth try in nine matches.
Goode missed the conversion but landed a penalty four minutes later to give the visitors an 8-0 lead.
Evans put Quins' first points on the board with a penalty, but Goode responded immediately to regain Worcester's eight-point advantage.
Lemi was shown a yellow card for killing the ball in front of his own line, Evans taking advantage with a penalty which dropped in off the post.
Despite having one less man, Worcester put the next points on the board with Goode's third successful penalty.
Just as it looked as though the Warriors would have a healthy half-time lead, Hopper sliced through the visitors' defence to go over to the left of the posts.
Evans added the extras, before kicking a penalty to help the hosts to a two-point lead at the break, while the visitors' Taulava was sin-binned, forcing the Warriors to start the second half with 14 men.
Worcester made an impressive start after the break but could not turn their pressure into points, before Evans landed his fourth penalty to increase the home side's lead.
A brilliant break from Alex Grove set replacement Classens free to go over in the corner to level the game at 19-19.
But Goode missed the conversion that would have put Warriors ahead and, seven minutes later, Evans landed the decisive drop goal to secure Harlequins's seventh league win of the season.
Worcester's consolation was a bonus point to move them three points behind eighth-placed Wasps.
VIEW FROM THE DRESSING ROOM
Harlequins boss Conor O'Shea:
"Disappointing game - no momentum. It was the second week in a row that the opposition have given away 20 penalties against us.
"I hope their front five are alright because every single time there was momentum in the game there was a player getting injured. I hope they're OK.
"But we had plenty of our own things we didn't do well. It's a win - that's all you can say. We're pretty disappointed. There was just no flow, no momentum, no nothing in the game."
Worcester rugby director Richard Hill:
"I was very pleased with the performance and the effort that went in.
"We have had that passion, intensity and desire at home and tonight it was about trying to replicate that away from home.
"The players gave everything and we had a real belief that we could win. To come here and outscore them by two tries to one was a psychological boost for us."
Williams; Stegmann, Hopper, Turner-Hall, Smith; Evans, Dickson; Lambert, Gray, Johnston, Kohn, Robson, Fa'asavalu, Wallace, Easter (capt).
Guest for Fa'asavalu (55), Casson for Turner-Hall (59)
Buchanan, Marfo, Collier, Matthews, Burns, Clegg.
Pennell; Walker, Grove, Matavesi, Lemi; Goode, Hodgson; Ceri Jones, Shervington, Andress, Percival (capt), Chris Jones, Best, Kvesic, Taulava.
Murray for Andress (35), Schofield for Chris Jones (53), Lutui for Shervington (54), Classens for Matavesi (63), Arr for Hodgson (63), Betty for Best (63).
Lemi (24), Taulava (40).
L Pearce (RFU).