In this week’s Sport: the Rugby World Cup final – our preview of the game that will determine who will be first to lift the Webb Ellis Cup a third time, as New Zealand take on Australia at Twickenham | David Flatman picks his Rugby World Cup team of the tournament | Xavi, Spain’s most successful ever player, talks about his admiration for Arsenal and Louis van Gaal | British adventurer Sarah Outen reflects on her 25,000-mile loop of the northern hemisphere by bike, kayak and row boat | Liverpool midfielder Adam Lallana charts his journey from fighting for wages in League One to heavy metal football under Jurgen Klopp | GP2 driver Jann Mardenborough reveals how he went from being a Gran Turismo gaming addict to making the podium on the pro circuit | GB gymnast Lisa Mason talks about her unlikely comeback in Sport Uncovered | Plus: Geraint Thomas on stern words from Dave Brailsford and being starstruck by his fellow Welshmen