Blues full back Dan Fish scored a hat-trick of tries to steer Cardiff to a 29-17 win over Aberavon in the Principality Premiership.
Back row Luke Hamilton made it a bonus point win for the visitors as he crashed over for a fourth try. But even though the Blue and Blacks were well in control of the game, leading 17-3 at the break, the conceded two second half tries when they were reduced to 13 men.
Outside Ceiron Thomas and Jonathan Edwards both saw yellow within the space of a minute and that allowed the Wizards to hit back with tries from Aaron Jones and John Phillips.
Llanelli and Bridgend certainly provided value for money for the fans at Parc y Scarlets in a game of 13 tries and 82 points. In the end the home side came out on top 46-36.
Bridgend went away with a try bonus point after running in six tries, two of which came from Ospreys full back Ross Jones, but Llanelli had wrapped up their bonus point by the break.
Wing Josh Adams, hooker Kirby Myhill, outside half Josh Lewis and a penalty try gave them a 26-14 interval lead.
In the second half there were three more tries from the centre pair of Kyle Evans and Steffan Evans (2) and Lewis ended with 13 points with four conversions to go with his try.
IRB World Junior Player of the Year Sam Davies kicked three second half penalties and a conversion for Swansea to give them a 16-13 second half lead over Carmarthen Quins at St Helens, but it wasn't enough to see the All Whites home.
The Quins conjured up two second half tries after leading 6-0 at the break.
Centre Dylan Morgan got the first and then Wales' sevens expert Lee Williams crossed for the match winner.
Bedwas got back to winning ways after their heavy home defeat to Cardiff last weekend as they beat Neath 37-26 at the Gnoll.
Richard Powell was the hero as he kicked six penalties and converted two of his side's three tries for a match tally of 22 points.
Richard Wilkes, Steve Cullen and Luc Jones crossed for first half tries for the visitors while Ashley Evans and Ceri Young scored a try in each half for Neath.
There was also 16 points from the boot of Dai Langdon.
Cross Keys picked up a bonus point in beating Llandovery 29-13, while league leaders Pontypridd host Newport in the S4C live match on Sunday.
Wales reached their first semi-final since 2013 in the opening round of this season's HSBC World Rugby Sevens Series in Dubai. WRU TV's Graeme Gillespie recaps on what proved to be an eventful tournament
Wales and Ospreys back row James King, who came through the North Wales age grade system, nominated North Wales Regional Community Rugby Manager Marc Roberts, in the WRU's 'Diolch' initiative where squad players thanked those who played a part in their rise to the top.
Beating Merthyr has boosted Carmarthen Quins hopes of reaching a top eight spot in the Principality Premiership. Quins captain Haydn Pugh is delighted with his team's progress and is determined that everyone from the Under 6s through to the senior team, enjoys the ride.
When the Wales squad were asked to nominate individuals who played a big part in their early playing days, Wales and Dragons full back and wing Hallam Amos thought of his former Monmouth School rugby coach John Bevan.
Sam Cross and Luke Treharne have been named as co-captains of the Wales Sevens side as head coach Gareth Williams names his 12-man squad to play in the first leg of the HSBC World Series in Dubai next weekend.
Bedwas head coach Steve Law and players Nicky Griffiths and Alun Rees extol the virtues of the close knit club as they prepare to host third place RGC 1404 - who are one place head of them on the Principality Premiership points table - on Saturday.
Many of the Wales squad have said Diolch (thank you) to someone who played an important part in their early playing days by nominating them to be invited to the Wales v South Africa match. One person, Gowerton Comprehensive geography teacher Mr Dean Mason was nominated by two of his former pupils, Dan Biggar and Sam Davies.
The second WRU disability rugby pilot has been delivered, this time in Caerphilly schools, culminating in a festival at the Caerphilly Centre of Sporting Excellence, Ystrad Mynach tomorrow. Plans are in place to set up a Disability Rugby Club in Newbridge to provide long-term playing opportunities.
WRU TV: Hear from inside the Wales camp as Neil Jenkins discusses this weekend's clash with South Africa and how the squad are looking to put in a strong performance to round of the 2016 Under Armour Series