The high-profile arrival of Johnson, the former Wales and Australia attack coach, has further added to the anticipation around the Liberty Stadium.

BBC: Ospreys stars still 'undercooked'

Ruddock then left to take over from Steve Hansen as national coach, and, along with Griffiths and Scott Johnson, led Wales to their first Gram Slam in 27 years in 2005.

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Johnson dismissed Gatland's outburst and alluded to Wales' poor record of late, going seven matches without a victory.

BBC: Johnson backs Hartley to respond to Gatland criticism