|Tour match: Cardiff Blues v Uruguay|
|Cardiff Blues (12) 45|
|Tries: Lawrence, Llewellyn, Lewis, I Davies, Gill, Penalty try Cons: Morgan 4|
|Uruguay (7) 21|
|Tries: Dotti, Berchesi, Gattas Cons: Favaro, Berchesi 2|
Uruguay lost against a reserve Cardiff Blues side at a rain-soaked Arms Park on Tuesday night.
Wales will face Los Teros in Pool D at the 2019 Rugby World Cup and this touring side is likely to give coach Warren Gatland few real concerns.
Uruguay did show what quality they have when Ignacio Dotti 's try gave the South Americans an early lead.
But tries from Alun Lawrence, Max Llewellyn, Ethan Lewis, Ioan Davies and Harri Millard put Blues in control.
After looking to the bench for inspiration, Uruguay did respond with some good interplay that earned them two more tries from Filipe Berchesi and Facundo Gattas.
But Blues pulled away again when Fish's off-load put prop Rhys Gill over from close to the line, Matthew Morgan adding his fourth conversion, before a penalty try earned by the Welsh scrum on the final whistle made it 45-21.
The home side had made 14 changes from the team that beat Zebre 37-0 on Sunday in the Pro14, which was prop Gethin Jenkins' final game before retirement.
Wing Aled Summerhill - who was sin-binned in the first half against Uruguay for a deliberate knock-on - was the only survivor from that starting XV, which was captained by Dan Fish on his 100th appearance for the region.
It was the first time Cardiff Blues had faced international opposition since hosting Australia in 2009.
Wales also played Uruguay in the pool stage at the 2015 World Cup, running out 54-9 winners.
Australia - who Wales face at the Principality Stadium on Saturday looking to end a 13-game losing streak - Fiji and Georgia are the other pool opponents in Japan next year.
Cardiff Blues: Matthew Morgan; Aled Summerhill, Harri Millard, Max Llewellyn, Cam Lewis; Dan Fish (capt), Lewis Jones; Rhys Carre, Liam Belcher, Keiron Assiratti, James Down, Rory Thornton, Shane Lewis-Hughes, Sion Bennett, Alun Lawrence.
Replacements: Ethan Lewis, Rhys Gill, Will Davies-King, Miles Normandale, Ioan Rhys Davies, Jamie Hill, Ben Thomas, Ioan Davies, Peter Lloyd.
Uruguay: Gaston Mieres; Leandro Leivas, Juan Manuel Cat, Agustin Della Corte, Federico Favaro; Rodrigo Silva, Santiago Arata; Matias Benitez, German Kessler, Juan Echeverria, Ignacio Dotti, Manuel Leindekar, Juan Gaminara (capt), Leandro Segredo, Manuel Diana.
Replacements: Facundo Gattas, Mateo Sanguinetti, Juan Pedro Rombys, Manuel Ardao, Diego Magno, Juan Diego Ormaechea, Tomas Inciarte, Andres Vilaseca, Filipe Berchesi.