In SWALEC Division Two East, Mountain Ash closed the gap on league leaders, Gilfach Goch, thanks to a 33-21 win over fourth-placed Brynmawr.
The vital win on the road keeps them in the hunt for promotion. Brynmawr stuck with three tries but it was not enough to overcome the visitors, who scored tries through Merion Thomas, Craig Evans, Dale Keeping and Dean Philips to secure maximum points.
Treorchy also kept their chances alive with a bonus-point home victory over Penallta, Shaun Green, Damon Filmer, Andrew Mallin and Peter Hutchings the men who crossed for the hosts.
However Gilfach Goch, who were not in action this weekend, can win the title and promotion to Division One East with a bonus-point win in a crunch match against Treorchy on Friday.
Elsewhere in the division, Llanharan secured their place in the league for another year with a hard-fought victory over Llantwit Fardre.
Fleur De Lys will join Llanharan in the division next year after they were crowed Division Three East champions, recording a 29-17 win over Gwernyfed on the road. Back-row duo Leigh Taylor and Lee Jones were joined by Jamie Heythorn to touch-down and Paul Emanuelli slotted a further 14 points.
Meanwhile Pill Harriers ran in nine tries on their way to a 61-7 triumph over Croesyceillog. Ross Palmer was in magnificent form and the fly-half inspired the Harriers to victory with a five-try brace.
In a titanic battle in Division Four East that saw league leaders Abertillery BG travel to second-placed Risca. The visitors came out on top and took a giant leap towards securing the Championship thanks to a closely fought 18-13 win. Wing Aled Penn proved the difference and raced away to score two vital tries.
League strugglers, St Josephs, scrapped to a crucial win in their battle to avoid the drop, securing 15-13 win at Abercarn, Nigel Morgan and Ryan Moore the try scorers for St Jo's.
The WRU has launched a campaign to create a long term legacy for Welsh club rugby by highlighting the advantages of volunteering. Rhian Edwards, a volunteer at Seven Sisters, has enjoyed many benefits of her volunteering at a grassroots rugby club including being part of the Rugby World Cup volunteer workforce after being nominated by the WRU - and the WRU is asking for more people to develop their 'Welsh rugby roots'.
Wales head coach Warren Gatland and captain Sam Warburton say their first prioirty on Sunday in the opening game of the World Cup is to win against Uruguay and not get overly concerned with points difference.
With only days to go until the biggest rugby competition in the world begins, rugby fans visiting Cardiff this autumn will be able to enjoy a special display at National Museum Cardiff as part of the celebrations surrounding the Rugby World Cup.
Geraint John has taken up the new role of WRU elite coach development manager having arrived in Wales last week. WRU TV caught up with him at the WRU rugby department's strategy day at the Millennium Stadium.
The entire Welsh Rugby Union Rugby Department gathered at the Millennium Stadium earlier this week where WRU Head of Rugby Josh Lewsey looked back on a year where structural and strategic changes have seen significant progress made
The Welsh Rugby Union has released a specially produced video to spearhead a new campaign to help promote the values of rugby union. The video, entitled Let us Play underpins the WRU rugby department's philosophy - to engage, transfer and retain players, coaches and referees.