Harlequins progressed to the Amlin Challenge Cup semi-final stage after beating London Wasps 32-22 at Twickenham Stoop on Friday.
Nick Evans was the hero for Quins as he kicked five penalties, two conversions and a sweet drop-goal in a faultless kicking display.
The Stoop outfit had recorded an early 14-0 lead after Danny Care and former St Helens Rugby League star Maurie Fa'asavalu crossed.
But Wasps responded through scores from Seb Jewell, Tom Lindsay and Richard Haughton but the Kiwi ten's kicking saw Quins home to set up a fixture against Munster or Brive in the semi-finals.
Tries: Care, Fa'asavalu
Con: Evans 2
Pen: Evans 5
For London Wasps:
Tries: Jewell, Lewsey, Haughton
Con: Walder 2
Harlequins: 15 Mike Brown, 14 Gonzalo Camacho, 13 George Lowe, 12 Jordan Turner-Hall, 11 Ugo Monye, 10 Nick Evans, 9 Danny Care, 8 Nick Easter (capt), 7 Will Skinner, 6 Maurie Fa'asavalu, 5 George Robson, 4 Ollie Kohn, 3 John Andress, 2 Joe Gray, 1 Ceri Jones.
Replacements: 16 Chris Brooker, 17 Mark Lambert, 18 James Johnston, 19 Pete Browne, 20 Tomas Vallejos, 21 Dave Moore, 22 Rory Clegg, 23 Tom Williams.
London Wasps: 15 Mark van Gisbergen, 14 Richard Haughton, 13 Ben Jacobs, 12 Riki Flutey, 11 David Lemi, 10 Dave Walder, 9 Joe Simpson, 8 Andy Powell, 7 Dan Ward Smith, 6 John Hart (capt), 5 Joe Launchbury, 4 Simon Shaw, 3 Ben Broster, 2 Rob Webber, 1 Tim Payne.
Replacements: 16 Tom Lindsay, 17 Charlie Beech, 18 Zak Taulafo, 19 James Cannon, 20 Serge Betsen, 21 Nic Berry, 22 Christian Wade, 23 Seb Jewell.
Referee: Christophe Berdos (France)
Assistant referees: Pascal Gauzère (France), Jean-Luc Rebollal (France)
Television match official: Giulio De Santis (Italy)