Johnny Sexton has been ruled out of Ireland's World Cup quarter-final clash with Argentina, after aggravating his groin problem in training on Friday. | more… https://www.google.com/url?rct=j&sa=t&url=http://www.shropshirestar.com/sport/uk-sport/2015/10/17/injured-johnny-sexton-ruled-out-of-irelands-world-cup-quarter-final/&ct=ga&cd=CAIyHDQxMjEzYTNjZmYwOWZjYzQ6Y28udWs6ZW46R0I&usg=AFQjCNESVPml1FN_aqsEOdFGas0wy1idww