By Nick Purewal, Press Association
Published: 08:36 GMT, 16 March 2019 | Updated: 08:36 GMT, 16 March 2019
Rory Best has tipped rookie lineout caller James Ryan to come of age against the 'world's best lock' Alun Wyn Jones in Cardiff.
Wales captain Jones will equal Gethin Jenkins' record combined Wales and British and Irish Lions caps haul of 134 in Saturday's Guinness Six Nations decider.
The 33-year-old skipper starts the Principality Stadium clash as the master when compared with his Irish counterpart, Leinster's 16-cap, 22-year-old Ryan.
Ireland captain Rory Best has heaped praise on James Ryan ahead of his side's clash in Wales
Ireland captain Best however believes Ryan's finest trick in a stunning start to his career has been to fool the Test arena he has been around for what seems an 'eternity'.
'James is a reasonably young kid but it seems he's been around - with the performances he puts in - for an eternity,' said Best of Ryan, who will call Ireland's lineout for the first time in Cardiff.
'He hopefully will take it in his stride, and I think the great thing for us is the depth.
'This will be the third lineout caller of