Neath's title challenge was dealt a crushing blow as Swansea ripped the Welsh-Scottish league title wide open.
Victory would have almost assured the Welsh All Blacks the title, but the All Whites gatecrashed the party to virtually seal their place in next season's Heineken Cup.
Neath looked to have given their championship bid a huge boost when the hugely impressive Lee Jarvis dashed 40 metres after pouncing on his own chip forward to register the first try of the game.
His successful conversion was then matched by a delightful drop goal for the away side to race into an early lead.
But his opposite number Gavin Henson cut the deficit with his first penalty of the evening after 20 minutes.
Neath were powerless to prevent the All Whites from surging back into the match when Darren Morris muscled his way over for a try. Henson failed to convert from the touchline but the youngster added a second penalty on the half-hour mark to edge Swansea in front for the first time.
A drop goal from Jarvis in first-half injury time gave Neath a 13-11 interval lead, but a rare penalty miss after the break increased the pressure.
The Swansea pack turned the screw and their success at a scrum 13 minutes from time gave Henson the chance to emulate Jarvis and drop a goal under the posts. A carbon copy four minutes later sealed victory for Swansea leaving Neath's title bid laying in tatters.
The result leaves the door wide open for Llanelli, Newport or Cardiff to clinch the title.
The Scarlets will claim top spot if they can overcome Cardiff at The Arms Park on Friday evening. But should they slip up Newport could pounce if they were to win their two remaining fixtures against Pontypridd and Bridgend.
Cardiff are still in the hunt but they would have to run in a hatful of tries in their final game against Llanelli.
Whatever happens the gripping climax to the title has gone right down to the wire and this weekend someone will be celebrating the championship.
Wales U20 duo Leon Brown and Lloyd Lewis face a busy couple of weeks ahead. Not only will they have a Junior World Championship to take part in, they are both sitting A Level exams during the competition.
Wales U20 face a tough group in the Junior World Championship with France, England and Japan lying in wait but Attack coach Jason Strange and back rower Tom Phillips are looking forward to the campaign ahead.
Angus O'Brien has quickly settled into the Wales Sevens squad after solid performances in Hong Kong and Japan. With two rounds remaining in Glasgow and Twickenham on the World Series, WRU TV's Graeme Gillespie chats to the rising star.
Wales winger Luke Morgan has established himself as one of the deadliest finishers on the Sevens World Series. WRU TV's Graeme Gillespie catches up with him on the eve of this weekend's round in Glasgow.
All roads lead to Cardiff on Sunday for the SSE SWALEC Finals Day at the Millennium Stadium. Cambrian Welfare tackle Ystradgynlais in the Bowl final, Ystrad Rhondda play Newcastle Emlyn in the Plate final while defending champions Pontypridd face Bridgend in the Cup final.
WRU Chief Executive Roger Lewis, Deputy Minister for Culture, Sport and Tourism Ken Skates and WRU Chairman Gareth Davies earlier this week launched a new competition in conjunction with the WRU unveiling its archive room.
Welsh players and management joined Deputy Minister for Sport Ken Skates at the Pierhead Building, Cardiff Bay earlier this week to reveal the Union's pioneering school-club hub initiative has been so successful the project will now almost double the scale of the original project.
The Scarlets, Newport Gwent Dragons, Cardiff Blues and the Ospreys look ahead to Judgement Day III which sees the Blues take on the Ospreys (2.30) and the Dragons tackle the Scarlets (4.45pm) at the Millennium Stadium tomorrow afternoon.
Ystradgynlais and Ynysddu played out a titanic struggle at Taffs Well in the SSE SWALEC Bowl semi-final. At the end of the game neither team could be separated after a 15-15 stalemate but Ystradgynlais go through on try count.