Any Welsh squad announcement inevitably has its winners and unlucky losers. And when Warren Gatland announced his extended 42-strong training squad for the Rugby World Cup in Japan this autumn, it looked like the latter outweighed the former. We take a look at the ones to miss out, though some could be called up to the party if injury battles are won. JAMIE ROBERTS He has become a vital plug in the Bath defence and recently earned plaudits from Welsh coach Shaun Edwards for his rearguard action in their west country derby with Gloucester at Kingsholm. Also showing no let-up at The Rec in those trademark lung-busting carries that helped frame the ‘Warrenball’ gameplan with Wales. But it’s not been enough for Roberts who had desperately hoped to be included in this wider party despite being left out of recent squads. Barring injuries to others, the international career of this great Lion appears over. TYLER MORGAN The 23-year-old was included in Wales’ autumn squad but missed out on the Six Nations, and has been battling a shoulder injury in recent weeks. Was hoping to be back last weekend for their Judgement Day win over the Scarlets but failed to make…