In this week’s Sport: Anthony Joshua talks exclusively about his journey from boxing novice to Olympic champion and professional knock-out king | Arsenal’s Alex Oxlade-Chamberlain on his love for Justin Bieber’s music, rap dreams and giving away his trousers | Watford manager Quique Sanchez Flores reflects on adjusting to the “merciless” Premier League | We discover the unique challenges and dangers of the Dakar Rally, the world’s toughest motor race | Hurl yourself down one of the world’s most iconic downhill ski runs at the Streif in Kitzbuhel, Austria | England cricketer Danielle Wyatt bears all and talks building six-hitting strength in Sport Uncovered | Plus: columnist David Flatman on the irresistible car crash TV that is World’s Strongest Man