European Cup - Bath 10 Llanelli 27: Stephen Jones pulled the plug on Bath's European hopes at a rain-soaked Recreation Ground as Llanelli sailed into the semi-finals.
The Scarlets' Welsh international outhalf repeated his heroics of a fortnight ago when he tamed Leicester Tigers and booked Llanelli's quarter-final place.
This time, 1998 European champions Bath were his victims as he followed an eight-from-eight penalty exhibition against Leicester with an identical return to secure last-four status.
He also added an injury-time drop goal for good measure, giving him all 27 points as just reward for a masterful display.
Jones' deadly accuracy ruthlessly punished Bath's indiscipline. They never got to grips with either the stamina-sapping conditions or Llanelli's forwards.
He put Llanelli 18 points ahead before Bath flanker Gavin Thomas scored the game's solitary try on 67 minutes, but it proved scant consolation.
Any prospect of a late Bath revival collapsed courtesy of Jones' eighth successful strike, awarded although television replays suggested it had not gone over after bouncing off the post and then crossbar.
Bath skipper Mike Catt cost his side those points, being penalised for dissent, and that summed up the home team's frustrating afternoon as Llanelli claimed a semi-final spot for the second time in three seasons.
After beating both Leicester and Bath, the Scarlets need not have any fears of what awaits them in the penultimate round.
Bath though, struggling badly in the English Premiership, could now see their season drift into oblivion.
The quarter-final tie was given an early-morning green light by Irish referee Alan Lewis after three pitch inspections on Saturday ultimately led to him calling things off at lunchtime.
Jones' prolific right boot dominated the opening quarter, the Wales outhalf kicking three quickfire penalties.
Llanelli's magnificent commitment was summed up when scrumhalf Guy Easterby pulled off a stunning try-saving tackle on Bath centre Ollie Barkley.
BATH: Perry; Balshaw, Barkley, Tindall, Maggs; Catt, Williams; D Barnes, Long, Emms, Borthwick, Grewcock, G Thomas, Gabey, N. Thomas.
LLANELLI: G. Evans; Proctor, N Boobyer, L Davies, Finau; S Jones, G Easterby; Madden, McBryde, J Davies, Cooper, Wyatt, Hodges, S Easterby, Quinnell.
Referee: A Lewis (Ire).
