There were more hard lessons for Leeds Carnegie as they slipped to their second defeat of the season at Harlequins, losing 39-15.
Leeds travelled to the Twickenham Stoop for the first time since November 2004 as they looked to kick start their Guinness Premiership campaign.
Quins, who won on the opening day against London Irish, could have taken an early lead but fly half Chris Malone pulled his penalty wide after two minutes to let Leeds off the hook.
Having lost two players through injury the previous week in the defeat to Gloucester, Leeds were dealt another blow after just four minutes of this game when last season's Player of the Year Jon Dunbar limped from the field with a hamstring injury.
Leeds responded well to that set back and used the ball cleverly in the loose but Quins were then able to counter attack and earned a penalty after nine minutes which Malone was able to kick this time to make it 3-0.
The visitors had a number of other chances with Tom Biggs and Kearnan Myall both looking dangerous but poor handling in the latter phases of play cost Leeds field position and the chance to put pressure on Quins on their own try line.
However, referee Roy Maybank ensured he was featured heavily on the Sky cameras when he remarkably gave the home side a penalty try after 19 minutes. Quins had a scrum on the Leeds line which Maybank adjudged Leeds had deliberately brought up to stop the home side scoring and he immediately strutted between the posts to award the London club a penalty try. Despite the protests of captain Stuart Hooper regarding a lack of warning for his side, Quins had increased their lead to 10-0.
Three minutes later Malone increased the lead further with his second penalty after Leeds were penalised for hands in the ruck leading to Maybank to warn Hooper about persistent infringements and the possibility of a sin binning.
Eventually Leeds managed to gain a penalty within kicking range after 31 minutes but Leigh Hinton's effort dropped five metres short.
Hinton was successful with his next attempt with two minutes remaining in the half. Paul Volley was penalised after coming in from an offside position following Leeds' best period of play. Hinton added the straight forward penalty from 30 metres out to make it 13-3 and that was how it remained at half time.
However, Leeds shot themselves in the foot with less than a minute gone in the second half. Hinton put his kick off out on the full and from the scrum, Jordan Turner-Hall set Tom Guest away for a simple try which Malone converted.
Turner-Hall himself went in himself nine minutes later after good work by Hal Luscombe, Malone missed the conversion attempt but the home side now led 25-3.
Leeds did not let their heads drop and in particular Vili Ma'asi and Erik Lund impressed after coming on off the bench. Eventually, Leeds got their reward after a spell of constant pressure on the Quins line. Having conceded several penalties which were kicked to touch for line outs, Leeds mixed up their options and threw to the middle of the line out. The ball was worked forward and Rhys Oakley powered his way over from short range. Richard Welding brilliantly converted to make it 25-10 after 58 minutes.
However, six minutes later any thoughts of a comeback were dismissed when Chris Malone chipped over the Leeds defence and collected his own kick for the bonus point fourth try. He converted his own score to make it 32-10.
Having been so decisive in the first half with the penalty try, referee Maybank seemed to have mellowed in the second half and after Quins had been penalised for the sixth time on their own line for preventing Leeds from scoring, the home side were reduced to 14 men when Tom Guest was sin binned after 69 minutes.
Leeds took immediate advantage with a try from debutant Vili Ma'asi after his effort had been confirmed by the television match official.
However, the home side had the last word when Simon Keogh latched on to a cross field kick from Malone in acres of space and raced in for the try. Malone converted to make the final score 39-15.

Harlequins: M Brown; T Williams, H Luscombe, J Turner-Hall, C Amesbury (B Fulton 63); C Malone, S Keogh; C Jones, A Croall (C Laurent 61), M Ross, O Kohn (N Spanghero 67), J Evans, C Robshaw, P Volley (captain, W Skinner 61), T Guest.
Sin-bin: Guest 70.
Leeds: L Hinton (J Goodridge 52); J Holtby, J Hepworth (L Blackett 64), R Welding, T Biggs; J Brooks, J Bedford (M Aspinall 77), M Cusack, R Rawlinson (V Ma'asi 40), A Hopcroft (C Noon 49), S Hooper (captain), K Myall (E Lund 49), J Dunbar (S Stitcher 4), M Lock, R Oakley (Myall 51-55).
Referee: R Maybank
Attendance: 7,459.