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Dublin , Ireland - 23 August 2016; Players, from left, LLoyd Williams of Cardiff Blues, Tommy Bowe of Ulster, Dan Lydiate of Ospreys, Alessandro Zanni of Benneton Treviso, Billy Holland of Munster, Isa Nacewa of Leinster, John Muldoon of Connacht, George Biagi of Zebre, Jonny Gray of Glasgow Warriors, Lewis Evans of Newport Gwent Dragons, Stuart McInally of Edinburgh and Ken Owen of Scarlets in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)

Dublin , Ireland - 23 August 2016; Players, from left, LLoyd Williams of Cardiff Blues, Tommy Bowe of Ulster, Dan Lydiate of Ospreys, Alessandro Zanni of Benneton Treviso, Billy Holland of Munster, Isa Nacewa of Leinster, John Muldoon of Connacht, George Biagi of Zebre, Jonny Gray of Glasgow Warriors, Lewis Evans of Newport Gwent Dragons, Stuart McInally of Edinburgh and Ken Owen of Scarlets in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)
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Sportsfile Sam Barnes

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Dublin , Ireland - 23 August 2016; Players, from left, Billy Holland of Munster, Isa Nacewa of Leinster, John Muldoon of Connacht, and Tommy Bowe of Ulster in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)

Dublin , Ireland - 23 August 2016; Players, from left, Billy Holland of Munster, Isa Nacewa of Leinster, John Muldoon of Connacht, and Tommy Bowe of Ulster in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)
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Sportsfile Sam Barnes

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Dublin , Ireland - 23 August 2016; Players, from left, LLoyd Williams of Cardiff Blues, Dan Lydiate of Ospreys, Lewis Evans of Newport Gwent Dragons and Ken Owen of Scarlets in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)

Dublin , Ireland - 23 August 2016; Players, from left, LLoyd Williams of Cardiff Blues, Dan Lydiate of Ospreys, Lewis Evans of Newport Gwent Dragons and Ken Owen of Scarlets in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)
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Sportsfile Sam Barnes

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Dublin , Ireland - 23 August 2016; Players George Biagi of Zebre, left, and Alessandro Zanni of Benneton Treviso in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)

Dublin , Ireland - 23 August 2016; Players George Biagi of Zebre, left, and Alessandro Zanni of Benneton Treviso in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)
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Sportsfile Sam Barnes

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Dublin , Ireland - 23 August 2016; Players Stuart McInally of Edinburgh and Jonny Gray of Glasgow Warriors in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)

Dublin , Ireland - 23 August 2016; Players Stuart McInally of Edinburgh and Jonny Gray of Glasgow Warriors in attendance at the launch of the Guinness PRO12 2016/17 Championship at the Aviva Stadium in Dublin. (Photo By Sam Barnes/Sportsfile via Getty Images)
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Sportsfile Sam Barnes