Coleg Morgannwg recorded a resounding victory over Pembrokeshire College in the opening round of the Colleges League while Coleg Sir Gar and Gower College also chalked up wins.
Coleg Morgannwg defeated Pembs College 52-0 after leading 19-0 at the break with prop Calum Lewis, centre Jack Morris and No 8 Lewis Young scoring tries.
The second half saw Morgannwg take firm control up front with skipper Young always to the fore.
Five more tries came at regular intervals through hooker Jack Dando, lock Alwyn Lee, wing Jack Barrett plus flanker Jack Perkins and Morris again.
Fly-half Garin Thomas kicked six conversions out of eight to set the seal on a hugely promising start for the college.
Coleg Sir Gar brushed aside the challenge of Bridgend College with a comfortable 40-9 triumph.
Led by their quick and elusive full-back Luke Treharne, Coleg Sir Gâr were in control from first to last, scoring three tries in each half to post notice that they will be the side to beat in the league.
Not that Bridgend were outclassed but they suffered badly from a lack of possession and were it not for some brave tackling in the last quarter, they would have shipped far more points.
With prop Samson Lee, lock Curtis Morris and flanker Jake Iles prominent in tight and loose, CSG were soon 12-0 ahead with a try apiece from their two main attackers - the darting Treharne and intuitive fly-half Jordan Williams.
Williams added the conversion of his own try before the visitors fly-half Corey Butler kicked two penalties.
Treharne got another converted try only for Butler to keep Bridgend in touch with his third penalty but it was very much one way traffic thereafter.
Skipper and lock Matt Screech, flanker David Griggs and hooker Evan Yardley worked overtime for the visitors but converted tries from Williams, lock Jake Simm and wing Aaron Evans ensured a maximum five point haul for the home side.
Gower College were good value for their 17-7 win over Neath Port Talbot College.
In the all Ospreys clash, they built up a solid 17-0 half-time lead thanks to the good work of their pack in which No 8 Rhys Leonard, hooker Scott Otten and lock Rhodri Hughes were the leading lights.
Flanker Alun Rees and scrum-half Will Batcup got the tries and Davies - son of Scarlets coach Nigel Davies - added the conversions and two penalties.
The wind and drizzle at St Helen's made for a scrappy second-half but the sterling efforts of No 8 Matt Jenkins, wing Nathan Brooks and full-back Rhys Williams brought NPT right back into the game.
They got a try from the non-stop Jenkins, converted by busy scrum-half Rhodri Coles but then squandered a golden try opportunity before the game petered out amongst a raft of substitutions.
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