Ospreys coach Lyn Jones says that young locks Ian Evans and Alun Wyn Jones can star for Wales in the 2007 World Cup.
Evans has been tipped for a big future
The pair played in the 30-17 loss at the Scarlets, the Ospreys dominating the tight exchanges but failing to match their rivals' all-round play.
"That was a big step up for our second rows, it's a cauldron at Stradey Park," Jones told BBC Sport Wales.
"That's another claim for them to be Wales' partnership at the next World Cup, they're developing quickly."
Llandovery College and Swansea RFC product Wyn-Jones, 20, stands at 6ft 5ins and has impressed for Wales Under-21 this season.
Pontypridd-man Evans, 21, made the bench for the senior side in the autumn, but was denied a chance to challenge for a Six Nations place when he was banned for kicking Harry Ellis in a Heineken Cup tie in December.
Coach Jones was pleased with his team despite the loss in Llanelli, and sees hope for Saturday's visit of Glasgow.
"We've dragged ourselves round since our capitulation at Cardiff Blues, we're setting targets and seeing improvements," he said.
"Duncan Jones has been at the forefront and has been phenomenal as a captain.
"We fronted up to the Scarlets and looked well organised and structured, but our kicking was poor and the result was disappointing.
"Glasgow will offer a different type of threat to the Scarlets and we hope that they come to play rugby."
The west Wales side will wait on the fitness of Adrian Cashmore (back) and Andy Lloyd (head).
Barry Williams (back), Paul James (back), Lee Beach (broken foot), Brent Cockbain (hamstring), David Bishop (knee) and Ryan Jones (shoulder) remain long-term Osprey injuries.