Newport and Merthyr have booked their places in Welsh Rugby Union's National Cup final.
Newport beat Llandovery 16-12 at Aberavon's Talbot Athletic ground in the earlier kick off.
Full-back Geraint O'Driscoll's try sealed their win, with Matt O'Brien having a good afternoon with the boot.
Justin James got the only try of the game at Pandy Park, Cross Keys, as Merthyr were 10-6 winners over Ebbw Vale.
The final will be played at the Principality Stadium on 29 April.