Sam Warburton trusts home base yields benefits at World Cup and beyond

The Wales captain believes decision to stay with Cardiff Blues will prolong his career but he worries about long-term cost of playing in a ‘hostile position’When Wales beat Ireland during this year’s Six Nations in a match as physically gruelling and demanding as any that seasoned observers could remember, Sam Warburton barely had the strength left on the final whistle to raise his arms in celebration. The flanker, who led the Lions in Australia in 2013, had given his considerable all, as usual, and for the next few days could walk down the stairs of his home only by gripping the handrail.The …