SWALEC League Division Two East leaders Tredegar were given a second-half scare at Ynysybwl.
Tries from flanker David Ford, full-back Robert Smith and winger Daffyd James saw Tredegar build up a comfortable 22-7 before the All Whites rallied to bring the score back to 22-18.
A late penalty from Tredegar centre Greg Jones stopped the tide and saw the visitors emerge 25-18 winners.
Second placed Bedlinog were 22-15 winners at Rhydyfelin, while Mountain Ash crept past Llantrisant 10-6 in the clash between third and fourth.
Scrum-half Merion Thomas scored the game's only try for the Black and Ambers.
With Division Three East leaders Garndiffaith not playing, Pill Harriers moved level on points with the leaders after a five-try win at Nelson.
A pair of tries from Craig Lloyd, plus one each from Mark Wheeler, Louis Culverwell and Mark Thorogood saw Harriers pick up a bonus point which means they trail Garndiffaith on numbers of wins recorded.
Third place Croesyceiliog came back from 20-8 down on 50 minutes to win 28-20 at Rhymney. Matt Entwhistle conversion from his second try five minutes from the end saw the Croesyceiliog s take the lead, with a fourth try from Ieuan Wakefield earning the Cockerels a bonus point, denying Rhymney one in the process.
Llandaff remain top of Division Four East after a narrow win at Rhiwbina. The scores were locked at 13-13 with ten minutes remaining when full-back Nathan Rees kicked a penalty to give Llandaff the lead, which they refused to relinquish.
Nantyglo in second crossed ten times in a rampant 62-5 win over bottom club Pontllanfraith. There was two tries each for Richard Jones, Anthony Williams, Jamie Davies and Chris Williams for the Monmouthshire club.
The top two in Division Five East going into the afternoon, Blaenavon and Abercarn, met at the Recreation Ground, with visitors Abercarn running out 31-12 winners.
Tries from Matthew Jackson, Jack Davies, Nicky Lloyd and Jason Evans saw Abercarn pick up a bonus point, which sees them go ten points clear at the top of the table.Blaenavon's defeat sees them fall to fifth, behind Caldicot, Talywain and Oakdale, who all recorded away wins.
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.