Nicola Adams in jackpot mode as she prepares for Las Vegas debut

Nicola Adams cannot stop smiling as she prepares to take on Alexandra Vlaik of Hungary on the Gennady Golovkin undercard in Las Vegas on Saturday

Professional boxing is not a business that encourages much levity, but Nicola Adams is so unrelentingly content and smilingly happy that it is tempting to wonder if she realises what she has got herself into.Adams, the double Olympic gold medallist, makes her Las Vegas debut on Saturday night on the undercard of Gennady Golovkin’s showdown with Saul Álvarez, and she is taking the assignment seriously.Yet in the lead-up to only her third paid fight at 33 – at super-fly against the seasoned 17-...