The Cardiff Blues back-row has got the nod from Warren Gatland as the Wales coach explores his options at the end of a disappointing campaign.

Williams, who became the most capped Wales forward with 95 to his name in the defeat to Ireland last week, has been criticised in some quarters for his recent international form.

But Warburton has backed the 34-year-old to go past the 100-cap barrier.

“This game is the perfect chance to experiment as we can’t go any higher than fourth in the table,” said Warburton.

“It’s not really me replacing him – I’m sure that if there was a Grand Slam to play for the selection might have been made differently.

“Martyn still has a lot left in his engine. He has a wealth of knowledge and I learn off him all of the way.

“I was really happy to hear my name in the team after winning a couple of caps in the campaign already but this tops it off.”