Quins will be looking to get back to winning ways this Saturday against Bath at the Stoop (6.05pm), so make sure you are here to cheer them on! Here are Bath's 4 players to watch...
The 23-year-old Julian Salvi joins the West Country side from CA Brumbies where he was the first Brumbies player to be contracted directly from school in 2004.
Having represented the Australian Under 21s in 2005 and 2006, captaining the side in 2006, as well as leading the Australian Schools in 2003, Salvi went on to make a notable impact during the 2008 Investec Super 14. The robust and versatile back rower demonstrated his try-scoring abilities crossing the line for three tries, two of which in consecutive weeks against the Hurricanes and Waratahs.
His reputation as a mature and respected player has aided his development and progression at Bath Rugby and he has fast become the number one choice in his shirt.
Full-back Nick Abendanon burst onto the scene during the 2006-07 season, scoring 10 tries in 24 first-team appearances for Bath.
His form that season earned him a first England cap in South Africa - the country of his birth - in June 2007. He was capped again against France in August 2007, but narrowly missed out on a place in England's 30-man World Cup squad.
A strong tackler, balanced runner and dangerous counter-attacker, he has firmly established himself as Bath's first-choice full-back in the post-Matt Perry era.
Some fine performances during the 2008-09 season were rewarded with a call-up for the England Saxons squad for the 2009 Churchill Cup in the United States.
After bursting onto the scene, defences became more aware of his threat during the 2008-09 season - yet he still managed six tries and emerged as a more rounded team player.
His development has not gone unnoticed by England manager Martin Johnson - and at 22 years of age he was capped twice during the summer of 2009.
He scored a try on his Test debut as England beat Argentina at Old Trafford - and was on the scoresheet again a week later as they lost to the Pumas in Salta.
Formidable at the line-out and scrummage, Grewcock is also an imposing presence around the field and, despite his vast experience at the top level, is always willing to improve his game.
He made his England debut in Buenos Aires in 1997 and was a member of England's 2003 Six Nations Grand Slam and World Cup winning squads. Grewcock previously played for Coventry and Saracens, joining Bath in the summer of 2001.
During the summer of 2009 he was appointed one of Bath's five player representatives for the 2009-10 season.
During week commencing 22nd April Harlequins will launch an innovative, new Membership Scheme which will replace the existing Season Ticket Holder Programme. Further details of the scheme will be announced in due course.