Gloucester overcome leaders
Two tries from full-back Ross Chisholm were not enough to help stuttering Harlequins as the Aviva Premiership leaders slumped to a 29-23 defeat at Gloucester.
Quins will be kicking themselves back down the motorway after they had Gloucester in trouble a few times in the second half but could not get the tries to recover an early setback.
Wing Charlie Sharples, full-back Jonny May and flanker Akapusi Qera grabbed Gloucester's tries, with fly-half Freddie Burns booting four penalties and a conversion.
Harlequins' other points came from fly-half Nick Evans' boot with three penalties and two conversions.