Ex-Ireland captain Johnny Sexton will join Andy Farrell's staff as an assistant coach for this year's British & Irish Lions tour of Australia, the team said on Thursday, before taking up a full-time coaching position with the Irish Rugby Football Union. The former flyhalf joins assistant Lions coaches Simon Easterby, Andrew Goodman and John Fogarty, along with Richard Wigglesworth and John Dalziel. Sexton played 14 times for the Lions over two tours during his stand-out career for Ireland,